Put your letters in consecutive cells down a column, then enter the numbers
in the cells to the right of each letter. Now select the entire range of
letters & numbers and use Insert-Names-Create and check "Left column."

Now each letter is a named range corresponding to the number. You'll have
to enter

=a

or
=f

rather than just the letter, but that's pretty easy

"Skip" wrote:

I have 40 groups. I need to enter a four digit number for each.
There are 12 numbers, so many groups will be duplicate numbers.
Is there any way I can enter a number or letter and have the
4 digit number substituted into my sheet?
Like this
a=2323
b=4356
c=4653
Then the number will appear on the sheet.
Thanks for any assistance
Skip