The most common task constraint, As Soon As Possible (ASAP), will work for most dependencies. Essentially, by default, Task B will start immediately after the completion of Task A.

However, there are seven other task constraints that project managers can use when creating the schedule.

As Late As Possible (ALAP): tasks must end at the same time as the project finish

Finish No Earlier Than (FNET): tasks must finish on or after a specific date

Finish No Later Than (FNLT): tasks must finish on or before a specific date

Must Finish On (MFO): tasks must finish on a specific date

Must Start On (MSO): tasks must start on a specific date

Start No Earlier Than (SNET): tasks must start on or after a specific date

Start No Later Than (SNLT): tasks must start on or before a specific date

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