Hi,

You can use conditional formatting. Say your training date is in A1.

Format|Conditional format
Formaula is
Enter the formula
=TODAY()-A1=30
Select a colour
Click OK

This will colour the cell when A1 is 30 days earlier tha today so if your
training refresher is 6 months change 30 to 180 for example.

You can use the format painter to copy this format to other cells

Mike

"Mike the Safety Guy" wrote:

I am trying to set up a training matrix for my construction project and I
need to record dates of training certifications that expire over time. How
do I format/program the cell to change color to red or something similar to
alert me when the certification will expire.