=if(isblank(D2),"",vlookup(D2,Master!$B$1:$F$600,5,false))
I have this working which looksup a UID value to select a user. The users name is returned to the cell.
The problem is now I'd like to make sure that UID can only be called once to avoid duplication.
And the icing on the cake would be 'after' the UID was selected - either colour the Row on Master or Delete it from Master..
Cheers