How to enable conditional formatting so that a cell becomes red whenever today's date becomes previous cell's date + work days?

Question

Cell A1 (till A10) contains random date. I want B2 (till B10) to become red on the 3rd work day after A1. Also, if B is empty or NA then dont color B.

For example: if A1 = 18Oct, then B1 should become red on 23Oct. If A2 = 21Oct, then B2 should become red on 24Oct.

What code should I put in conditional formatting?

Answer 1

Highlight the relevant range in Column B, which is B1:B4 in the above example, enter the following formula as the formatting rule for conditional formatting:

=NETWORKDAYS($A1,$B1)=4