How do I insert an electronic signature box into a PDF?

airSlate SignNow is a professional tool that allows you to easily apply legally-binding eSignatures to your forms and documents and other fillable fields for others to complete and sign. To create a signature box, upload a sample document to your account, open it in the editor, and drop the Signature Field from the left-side panel where you need your customers/partners to eSign. Add as many boxes for eSignatures as you need to collect, assign Roles for every party. Invite your signatories to approve your form by Creating a Signing Link or via an email request.