In Excel (2003), I want to limit the selection of values in a cell to allowable values from another spreadsheet.
For example, in the sheet "Currencies" I have
EUR,1.1 GBP,1.0 USD,1.5
(That's two columns, three rows)
In my main sheet I'd like to have a Currency column, in which the only allowable values are from column A in the Currencies sheet, i.e. the cell can contain only 'EUR', 'GBP', or 'USD'. (Elsewhere I'll be using that as a lookup to get the exchange rate, which is column B.)
How can I restrict the value in the cell? Having a dropdown like a windows combo box populated from the other sheet would be great.
Any answers using formulas, VBA, or whatever will be fine. Even a pointer to the relevant documentation would be great (I have looked, but I'm not sure what to look for).
Also helpful would be answers using LibreOffice, since I haven't finalized the choice of spreadsheet program, but I thought I'd have a better chance getting an answer in Excel.