dunning interval days

Hi consultant,

in dunning procedure, there is a parameter on dunning interval in days, say 14.

if run daily, system will count the run date and compare with the last dunning run which is the day before until the 15th day, system will dun the customer if still overdue.

may i know what if i run f150 weekly instead of daily? say interval in days 14, how the system count? is it by the run date when f150 is run or the system still will count by day even though it is not run by day.

thanks