I have a table where I keep track of applicants to our organisation. I have a column dedicated to when I first contact the applicant requesting documentation. I would like to format these cells to alert me when:
- It has been two weeks from initial contact date (yellow)
- It has been three weeks from initial contact date (orange)
- It has been four weeks from initial contact date (red)
I understand I will need to go to Conditional Formatting > New Rule > Use a formula to determine which cells to format. However I can't quite get the formula or selection right.

Please help and thank you in advance!