I am trying to the type of data entred into a cell: The entry can only be a combination of 1, 2, 3, 4. (The 1, 2, 3, 4 specifies quarters). Example they could enter 1, 2 or 1,4 or 1,2,3,4 or 1,3,4...get the idea..
At first I tried lists but, the list became long with all the combination...