I have a cash flow spreadsheet that projects out 3 years, by quarters. Right now, it is a constant number; ie; number of units divided by 12.........I need to be able to start with a certain number (say,for the first quarter) and increase it slowly over the next 6-9 months (2-3 quarters, or whatever time frame I choose). Then, slowly decrease it after that until I reach the total number of units. Is this possible?

Kind of a bell curve-type thing. Any and all help will be GREATLY appreciated.

Robshope