What is your column definition exactly for both columns (with an example)?
Is it only a text column like
Buffy the Vampire Slayer,Cheers (TV)
&Cupid (TV 1998)
&Star Trek_ Deep Space Nine Ties
Then your separator should be & or \&
In the end you can do do everything you want in a template. If you want to do more complex combinations use the program mode in the template, e.g.
For now I haven't the time to help more but this evening I can spend some time to help if you give me some more input of your structure (or maybe someone else can jump in too).