Microsoft KB Archive/46139

Lead or Lag Relationships in Project for Windows

PSS ID Number: Q46139 Article last modified on 03-15-1995

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WINDOWS | MACINTOSH

Lead or lag time refers to the amount of waiting time between the start or finish of two activities. The two terms are relative, and whether a particular time is lead or lag depends on whether you are working with the predecessor or the successor task. A predecessor “leads” a successor task; a successor “lags” a predecessor task.

When you create lead or lag time, you are working with two activities and specifying a waiting time between them. You specify the waiting time in the “Predecessors” field of one of the two activities. Which of the activities should have the wait time specified depends on what kind of predecessor relationship exists between the two activities, as in the following examples:

If the relationship is: Specify lead/lag in the: ———————– ————————

Finish-to-start (normal) Task that starts later

Start-to-start Task that starts later

Finish-to-finish Task that finishes later

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Copyright Microsoft Corporation 1995.