Streamline your lead management cycle for planning

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hi everyone welcome back to the series of project management key concepts where we're delving deeper into the concepts of the project management body of knowledge this one in particular is lead time and lag time and the reason why we're looking at this is it can often get confused when when we're looking when we're actually you're looking at examples in the PMP exam so it is really good to get a good idea of it you will find these questions on the PMP exam so it's just good to get your head around it first before going into the exam and also then you can use it in your project management career so lead time and lag time when we refer to this apply to your schedule during your schedule analysis so looking at the critical path method finding that critical path what is the shortest duration that your that your project can be lead time is the amount of time that the next activity can be brought forward so those two activities can be done in parallel and we'll look at an example of that but lag time when we're referring to lag time in the PMP exam it's the amount of time that the next activity will be delayed so it's lagging behind leads time we are leading it forward now remember in precedence diagramming a method or the critical path method we can have different task dependencies and these are our finish to start finish to finish start to start or start to finish where for example the second activity cannot finish until the first activity has started that's how that works but lead time you'll find only applies to our finish to start so our next activity cannot start until our previous activity has finished but lag time can affect all of these so any of these activities can lag behind or have a lag in between those two activities so let's look at an example of lead let's see a photoshoot for example will take four days and that photo editing will take six days after that now instead of waiting until the end of the four day photo shoot to begin editing those pictures we could start editing after the first day of shooting so in then instead of 10 days in total because we've got four days here and six days here we're bringing this photo editing forward we're leading it forward and using that lead time that's available and now our total time sits at 7 days instead of the 10 days because we've led it forward we're leading it forward and we've taken advantage of that as you can see the the two items are now done in parallel they're done at the same time for a portion of those activities as well now lag is the is moving it the other way so let's say for a house a house frame might take five days to put up but it also has to wait five days after the concrete foundation has been laid so if we don't want to put anything on that concrete foundation in case it you know messes with the integrity of that concrete foundation for example and we just want to make sure that it sets properly so we have to have a lag in our project schedule that's the five day lag for our concrete to set our second activity here is lagging behind the first activity and that lag in this case is five days long now that is the idea of leads and lags in your project schedule [Music] [Applause]