How do I add lag time to a predecessor?

When you add lag time to a predecessor, the start date of the successor task is delayed or "offset" by a certain number of days. To add lag time to a predecessor, first ensure a predecessor relationship exists between the two Schedule Tasks. 

Next, add a + sign and the number of delay days to the existing predecessor relationship (fs, ff, sf, or ss). For example: to add a 3-day delay to an fs predecessor relationship, the format fs+3 would be used. This means that the successor task will begin 3 days after the predecessor task is completed.

To add lead time (which makes a task begin earlier and enables task overlap), substitute the + sign for a - sign. 

More information on schedule predecessors can be found here.

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