Can't work this out, and I know I should be able to do so.
I have customers that pay me once a month, for 3 months.
All I want is to be able to enter the first payment (example - 17th December 2014), then the next 2 cells will automatically fill with 17th Jan 2015, and 17th Feb 2015.
I'm know I'm just being thick, someone please put me out of my misery please. It's been an awful long day.