Can this addendum be signed electronically?

Yes. Electronic signatures are generally valid under the federal ESIGN Act (15 U.S.C. §7001) and state UETA laws, provided intent, consent, attribution, and retention requirements are met.

Do I need a notary or witness?

Not usually for commercial change orders, but certain state rules or specific contract clauses may require notarization or witnesses; verify state or contract-specific requirements.

What signer authentication is appropriate?

Use email or SMS codes for low-risk approvals; use stronger authentication (KBA or multi-factor) for high-value changes or regulated data access.

How should executed copies be stored?

Store signed PDFs with audit trails in a secure repository and apply retention policies aligned with contract and regulatory requirements, including exportable certificates of completion.

What happens if a name is mismatched?

A mismatched legal name can raise enforceability questions and may require re-signing; ensure signer identity and organization details match delegation of authority documents.

How long to retain the executed addendum?

Retain for the contract term plus at least three years; follow industry rules such as IRS retention (IRC §6501(a)) and HIPAA record retention where applicable.

Electronic Signature
Templates
Project Management
Project Management Additional Functionality Template

Project Management Additional Functionality Template

This template is fully customizable. Edit the text, fill out the fields, and send it for signature. Give it a try!

PROJECT MANAGEMENT ADDITIONAL FUNCTIONALITY TEMPLATE

This Additional Functionality Addendum (Addendum) supplements and amends the existing Statement of Work for the project identified below. Effective Date: . This Addendum becomes part of and is governed by the terms of the underlying agreement between the parties.

Project Identification

Project Title:

Project ID Client Name Service Provider Project Manager (Service Provider) Reference SOW/Agreement Date

Scope of Additional Functionality

Description: The Service Provider will perform the additional work described below. This description supersedes any conflicting description in the original Statement of Work to the extent expressly stated herein.

Detailed Description of Additional Functionality Assumptions and Dependencies Out-of-Scope Items

Deliverables and Acceptance Criteria

Each deliverable shall be assessed against the acceptance criteria set forth below. Acceptance requires written confirmation from the Client or deemed acceptance after the specified acceptance period if no material defects are reported.

Deliverable 1 — Description Deliverable 1 — Acceptance Criteria Deliverable 2 — Description Deliverable 2 — Acceptance Criteria Deliverable 3 — Description (optional) Deliverable 3 — Acceptance Criteria

Timeline and Milestones

The Service Provider will commence work on: and target completion by: .

Milestone 1 — Description Milestone 1 — Target Date Milestone 2 — Description Milestone 2 — Target Date Milestone 3 — Description (optional) Milestone 3 — Target Date

Budget and Payment

The total additional cost for the functionality described in this Addendum is: . Payment terms: .

Estimated Hours Hourly Rate (if applicable) Payment Schedule / Invoicing

Late payments shall accrue interest at: unless otherwise agreed in writing.

Change Order and Modification Procedure

The parties agree that any changes to scope, cost, schedule, or deliverables arising from this Addendum must be documented and approved through the established Change Order process. No additional work will proceed without written authorization signed by Client and Service Provider.

Change Order Contact (Client) Change Order Contact (Service Provider) Change Order Approval Required

Written approval by both parties is required prior to commencement of changed work

Testing, Acceptance, and Remedies

Deliverables will undergo acceptance testing by the Client for the period of days following delivery. If Client provides written notice of material nonconformity within the acceptance period, Service Provider shall, at its expense, use commercially reasonable efforts to correct such nonconformities within a mutually agreed remediation period.

Confidentiality and Intellectual Property

Each party shall maintain the confidentiality of the other party’s Confidential Information. Confidential Information does not include information that is publicly available through no fault of the receiving party, independently developed without use of the disclosing party’s Confidential Information, or rightfully received from a third party without restriction.

Confidentiality obligation duration: months following disclosure.

Intellectual Property: Work product created specifically for the Client under this Addendum will be considered a work made for hire. To the extent any such work product is not a work made for hire, Service Provider hereby assigns to Client all right, title and interest in such work product upon full payment of amounts due. Service Provider retains the right to use general skills, know-how and techniques developed or used in performing the services, provided no Client Confidential Information or deliverables are disclosed.

Warranties; Limitation of Liability

Service Provider warrants that the additional functionality will be performed in a professional and workmanlike manner consistent with industry standards. Except as expressly set forth herein, Service Provider disclaims all other warranties, express or implied. Neither party shall be liable to the other for indirect, incidental, consequential, special or punitive damages, except for each party’s gross negligence or willful misconduct.

Governing Law and Dispute Resolution

This Addendum shall be governed by and construed in accordance with the laws of: . The parties shall first attempt to resolve disputes by good faith negotiation prior to initiating formal proceedings.

Miscellaneous

Except as expressly modified by this Addendum, all other terms of the underlying agreement remain in full force and effect. In the event of any conflict between this Addendum and the underlying Statement of Work, the terms of this Addendum govern solely with respect to the additional functionality described herein.

Additional Notices / Special Instructions

Client Name:

By:

Date:

Service Provider:

By:

Date:

What the Project Management Additional Functionality Template Is

The Project Management Additional Functionality Template is a formal contract addendum used to document agreed changes to project scope, deliverables, schedule, costs, and acceptance criteria. It standardizes how additional features or services are proposed, reviewed, and accepted during an active project, reducing ambiguity about responsibilities, payment terms, and timelines. The template supports signatures from project stakeholders and can be executed electronically where permitted, enabling consistent recordkeeping and an auditable trail of approvals for later reference or dispute resolution.

Why a Standardized Addendum Helps Project Delivery

A clear additional-functionality template reduces rework, clarifies costs and acceptance criteria, and preserves an evidentiary record of approvals and scope decisions for audits or claims.

Which Roles Typically Use This Template

Teams use this template to manage scope changes consistently across projects and stakeholders.

Project management offices and program managers coordinating scope and resources.
Procurement and contracting teams authorizing cost or term changes.
Client account managers or product owners approving added features.

Standardization helps legal, procurement, and project teams coordinate approvals, invoicing, and release management.

Core Sections to Include in a Professional Addendum

A complete Project Management Additional Functionality Template should be modular and concise so reviewers can identify changes, costs, and acceptance steps quickly.

Change Summary

One-paragraph overview of the additional functionality, referencing original contract sections and the reason for the change.

Scope Details

Precise description of new tasks, deliverables, and any dependencies, including file names, version numbers, and acceptance test cases.

Schedule Impact

Revised milestones, target delivery dates, and any phased rollout details that affect overall project timeline.

Cost and Payment

Itemized cost estimates, billing milestones, purchase order references, and payment terms tied to acceptance criteria.

Acceptance Criteria

Measurable pass/fail conditions, testing procedures, and sign-off roles required to mark the work complete.

Signatures

Designated signatory lines for authorized representatives, dates, and optional witness or notary acknowledgements where required.

Step-by-Step: Fill, Review, and Execute the Addendum

Follow this sequence to prepare, obtain approvals, and finalize the additional-functionality agreement quickly and consistently.

01

Prepare Draft: Populate template fields with scope, cost, schedule, and acceptance criteria.
02

Internal Review: Route to PM, legal, and finance for comment and budget confirmation.
03

Client Approval: Send to client signatories with a clear review deadline and any supporting attachments.
04

Finalize Execution: Capture signatures, distribute fully executed copies, and update project plans and invoices.

Configuring a Digital Workflow for This Template

Settings below reflect common online workflow configurations for automated routing, signer authentication, and records retention.

Workflow Step \| Online Setting	Action \| Recommended configuration
Upload Template	PDF or DOCX source with fillable fields
Add Fields	Signature, date, text, and checkbox fields; use conditional visibility
Assign Signers	Email addresses and role order for sequential routing
Authentication	Email link or SMS code; use advanced auth for high-risk changes
Retention Policy	Set automated retention and export to secure storage

Where to Send or File the Executed Addendum

After execution, distribute copies to stakeholders and file the signed addendum with project records, finance, and legal teams for traceability.

Project Folder: Save executed copy in the project document repository with version control
Finance: Send invoice reference and executed addendum to accounts payable
Legal: Archive for contract continuity and future audits
Client Records: Provide final signed PDF to client and update ticket or work order

Digital Signing and Integration Considerations

Choose a signing platform that supports integrations, secure storage, and the required signer authentication level.

Integrations: Salesforce, NetSuite, Microsoft 365, Google Workspace
Formats Supported: PDF, DOCX, and fillable form exports
Authentication: Email link, SMS code, or advanced signer authentication

Typical Timelines and Processing Expectations

Use these timing benchmarks when planning reviews, approvals, and implementation after change approval.

Proposal Submission Window:

Expect 1–3 business days for internal drafting and cost estimates

Internal Review Period:

Allocate 3–5 business days for legal, finance, and PM approval

Client Review Cycle:

Plan 5–10 business days for client evaluation and questions

Execution and Distribution:

Fully executed copies delivered within 1 business day of final signature

Implementation Lead Time:

Start work per revised schedule; expect changes to affect downstream milestones

Key Milestones From Request to Acceptance

A sequential milestone view helps teams coordinate approvals, procurements, and handoffs after a scope change is requested.

01

Change Request Submitted

Stakeholder documents requested functionality and business justification.

02

Technical and Cost Review

PM and engineering estimate effort and budget impact.

03

Formal Approval

Authorized signatories approve costs, schedule, and acceptance criteria.

04

Release and Acceptance

Work delivered, tested per criteria, and signed off by client.

Common Mistakes to Avoid When Preparing the Addendum

Vague scope descriptions that omit deliverable formats or acceptance data cause disputes and delay sign-off by weeks.
Failing to list dependencies or impacted features can create unexpected rework and budget overruns during implementation.
Not aligning payment milestones to measurable acceptance criteria can lead to invoicing delays and withheld payments.
Skipping version control for affected documents leads to confusion about which requirements apply during development and testing.

Risks and Consequences of an Incorrect or Missing Addendum

Scope Disputes: Delays, increased costs, and potential contract claims.

Payment Delays: Invoices may be rejected without clear acceptance terms.

Regulatory Exposure: Industry-specific requirements may be unmet, risking noncompliance.

Audit Findings: Incomplete records lead to adverse audit conclusions.

Operational Delays: Unclear handoffs slow development and release schedules.

Reputational Harm: Repeated contract issues can damage client relationships.

Required Information and Security Considerations

Signer Identity: Full legal name

Signature Date: MM/DD/YYYY format

Document Hash: Tamper-evident checksum

In-Transit Encryption: TLS 1.2/1.3

At-Rest Encryption: AES-256

Compliance Certifications: SOC 2 Type II; ISO 27001; HIPAA BAA available

Who May Sign and What Authority Is Required

Project Manager

Typically responsible for preparing and submitting the addendum for internal approval. The PM cannot bind the company financially unless explicitly authorized by procurement or a delegated contracting authority.

Client Representative

An authorized signatory from the client side who can accept scope and costs. Verify signatory authority against the master services agreement or current client delegation of authority.

eSignature Vendor Comparison for Executing Addenda

Basic pricing and capability differences among common eSignature vendors. Place vendor selection in the context of required features such as HIPAA support, bulk send, and envelope limits.

	signNow	DocuSign	Adobe Sign	PandaDoc	HelloSign
Starting Price	$8/user/mo	$15/user/mo	$14/user/mo	$19/user/mo	$15/user/mo
Free Trial	7-day free trial	Limited trial	Limited trial	Limited trial	Limited trial
Bulk Send	Yes	Yes	Yes	Yes	No
Audit Trail	Yes	Yes	Yes	Yes	Yes
HIPAA Compliant	Yes	Yes	Yes	No	No
Envelope Cap	No cap	100 envelopes/user/year	Varies by plan	Varies by plan	Varies by plan

Frequently Asked Questions About the Addendum

Answers to common questions about legality, electronic execution, notarization, and recordkeeping for additional-functionality addenda.

Need help? Contact support

Can this addendum be signed electronically?
Yes. Electronic signatures are generally valid under the federal ESIGN Act (15 U.S.C. §7001) and state UETA laws, provided intent, consent, attribution, and retention requirements are met.
Do I need a notary or witness?
Not usually for commercial change orders, but certain state rules or specific contract clauses may require notarization or witnesses; verify state or contract-specific requirements.
What signer authentication is appropriate?
Use email or SMS codes for low-risk approvals; use stronger authentication (KBA or multi-factor) for high-value changes or regulated data access.
How should executed copies be stored?
Store signed PDFs with audit trails in a secure repository and apply retention policies aligned with contract and regulatory requirements, including exportable certificates of completion.
What happens if a name is mismatched?
A mismatched legal name can raise enforceability questions and may require re-signing; ensure signer identity and organization details match delegation of authority documents.
How long to retain the executed addendum?
Retain for the contract term plus at least three years; follow industry rules such as IRS retention (IRC §6501(a)) and HIPAA record retention where applicable.

be ready to get more

Join over 28 million airSlate SignNow users

Sign Now