counting multiple conditions

Hi all,
I want to count all cells that contain the various "Enrolled" categories for my service. I know how to count just one of them but can't figure out how to count all 3 different one together. I have attached a spreadsheet for reference. The cell with the red background is the one that needs the formula. The end answer should be 7 but I don't want to manually count it!

I'm pretty sure that when I see the answer I will kick myself with how simple it is - I just can't remember how to do it!

Thanks in advance,

Cameron