Hi GarlynGay -  I owe the community an apology, I actually remembered how to do it at the register page,  Just use a shortcut  <Alt+S>  and it opens the Transaction quickly, with the Class column.  Lately, my PC died. right at the critical time, the end of calendar year.  I had put in everything brand new, including Quickbooks Pro 2018 Desktop.  I was so nervous, I had forgotten the routine.  I understand, to add a Class column is not feasible at this time.  But all is well,.  Thank you for your response and courtesy.