A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi,
Select C2 then drag to select column C values then
Home tab | conditional formatting | new rule | use a formula to decide which cells to format and enter this formula.
=C2>IF(DATEDIF(B2,TODAY(),"Y")>=16,320,IF(DATEDIF(B2,TODAY(),"Y")>=5,240,160))
Click the format button | fill tab | choose a colour and OK out.