If you selected Wait Per Absence, select a formula in this field.
The count formula interprets the days that are to be counted
against the wait period. This formula is similar to, and usually
the same as, the day formula, though this is not a requirement.
For example, you might want the day formula to consider
workdays and the count formula to consider calendar days.
The count formula is resolved each day of the absence event
until the wait period is met.