Thanks for the great suggestions. I created some codes that got the result that I wanted before I received your replies but am having an issue that blank cells are now being conditionally formatted as well. Code I wrote was:
=TODAY()>A1 FORMATTED AS RED
=TODAY()+30>A1...
I'm trying to create a spreadsheet that list staff names on the X and various certifications on the Y axis. I'd like to make the format the cells so that when a certification expiration date is approaching it turns yellow within 3 months of expiration and red when expired.