title: Prompt user when cell is changed
body: <p>I'm very new to creating macros and programming in general.  I have a worksheet of 38 tabs.  31 tabs are for the days of the month.  I would like to create a macro that will prompt users with a warning message any time "MCO" is selected in column N for each of these 31 tabs.  Is that possible?</p>
  
  <p>Thanks</p>