Conditional Formatting

[MyDogJake]

Hey all,

Thanks in advance for your consideration.

I'm in need of help with a simple conditional formatting problem.
I need to identify a specific value that may be part of mixed content (15-Apr or Apr/May or Apr) ..the returned result should highlight in yellow - in this case; all instances of "April"

I want to add a drop down button to add choices for months....

My quick mockup is attached.

Thanks again.
MDJ