Associating Visual Basic Code to a Cell

[aspenelk]

I asked a question yesterday about how to make a pull down list where
multiple items could be selected at the same time. I got good replies and
pointed to some Visual Basic code that will allow those multple choice to be
dispalyed in another cell. I figured out how to bring that Visual Basic code
over under the developer tab and save it but I'm not sure how to associate it
with the cell where I want the pull down list. I am using the code found at:

http://www.contextures.on.ca/excelfiles.html#DV0017

sheet 3

thanks