Project : Lag and Lead Time
Project : Lag and Lead Time
In MS Project, when you establish a relationship between two tasks, you can specify a lag. Lag indicates the gap time between two tasks.
You can specify lag in the Task Information -> Predecessors tab:
Figure 1
Or in the table view:
Figure 2
There are two type of lag: delay and overlap.
Delay is indicated by a positive lag value and is called lag time in MS Project. It specifies that the successor task will start only after N days the predecessor task is completed (based on finish-start relationship). Figure 2 is an example of lag time (with positive two day lag).
Overlap is indicated by a negative lag value and is called lead time in MS Project. It specifies that the successor task will start N days before the predecessor task is completed (based on finish-start relationship). Figure 3 is an example of lead time (with negative one day lag).
Figure 3
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