Period Costs - Where to use it? Program level or individual emails?
Hi,
You can see the screenshot.....we have various email blasts in a program.....channel "Email".
Is it advisable to add "period cost" at just program level by month by region?

OR should I add "period cost" to each email campaign --- All these emails are under the program 2018_02_FacilityManagerOf Tomorrow - thx
