A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
In D3:
=IF(C3="ED",EDATE(B3,6),"")
Format D3 as a date, then fill down.
With the range with formulas selected, D3 should be the active cell in the selection.
On the Home tab of the ribbon, select Conditional Formatting > New Rule...
Select 'Format only cells that contain'.
Leave the first drop down set to 'Cell Value'.
Select 'less than or equal to' from the second drop down.
Enter =TODAY()+90 in the box next to it.
Click Format...
Activate the Fill tab.
Select green.
Click OK, then click OK again.
Repeat these steps, but with =TODAY()+60 and yellow as color.
Finally, repeat them with 'less than' and =TODAY() and red as color.