title: Excel Duplicates based on Dates Difference
body: <p>I have the following issue:</p>
  
  <p>Say, Column A are the different Dates in a time span of 3 years
  and Column B is the "Code Number of Equipment" which is repeated from time to time. </p>
  
  <p>I want to set up a rule where, excel will highlight in "Code Number of Equipment" the duplicates ONLY when the dates difference referring to the same "Code Number of Equipment" is less or equal to than 7 days.</p>
  
  <p>Thanking in advance,</p>