I have a row where I will be using tally marks.  I only want one
tally per row but it is based on a progression to track steps in the
process.  So if they have reached the next step they can just put a
tally (an X) in the new cell and it will auto replace the previous
tally.  Thank you for any help.

eg.

                 Step 1          Step 2            Step 3

Person 1                                               X

Person 2            X

Person 3                             X