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Lead and Lag Time in Task Dependencies
TL;DR
Lead and lag time let you add overlap or waiting time between dependent tasks on the Gantt Chart. In the Predecessors column, add -number for lead time or +number for lag time after the dependency, then press Enter.
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You can use lead and lag time indicators to specify:
- The overlap between tasks (i.e., to designate that the next task(s) in a chain can start N days before its predecessor has finished).
- The waiting period before the next task(s) in a chain can start.
Note
You can specify lead/lag time only from the table portion of the Gantt chart. When you drag and drop a task on the timeline, lead/lag isn't automatically added.
- Locate a task for which you need to indicate lag time (a waiting period).
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Double-click the Predecessors column. If you don't see it, click the gear icon 1 in the table's upper left-hand corner and check the box next to Predecessors 2.
- Place your cursor at the end of the task dependency field and enter:
- The - sign followed by a number to specify the lead time in days.
- The + sign followed by a number to specify the lag time in days.
- Press Enter on your keyboard or click anywhere outside the cell you're editing. You'll see the successor is rescheduled in accordance with lag/lead time.