pull down list and single value allowed

[s v]

I have a column I want to prioritize from 1 to 11. I want to have those
values in a pull down list. I also want to only be able to use each value
once, if the same value is used again I need it to use the new one and get
rid of the old one.

Any thoughts?

 

[Pete_UK]

Debra Dalgleish shows how to do it here:

http://www.contextures.com/xlDataVal03.html

Hope this helps.

Pete