Now that is a clear and concise explanation.
If you're asking if Excel has a built-in feature to do this for you, the
answer is no.
You can obviously do this manually with a sort on the first column and a
lot of cutting and pasting and setting up Data Validation cells. If you
have a relatively small amount of data, I would recommend doing it manually.
Otherwise, VBA would be the solution.
If you want to go the VBA way and you need help with it, send me a file
with a sample of what you have and I'll write up something for you. My
email address is
[email protected]. Remove the "nop" from this address.
One question. What do you want to do when the item in Column A has only
one item in Column B? IOW, do you still want a drop-down in Column B with
only the one item or just the one item without the drop-down? HTH Otto