Shelf Talker label with shrinks

[Spot on liquor store]

Hi!

Can someone explain to me how to tell the shelf talker label creator to show which shrinks the current item is when printing?

For instance, if I print a label for a 12 pack of Castle Dumpies I need the label to say "12 pack" or something to that extent. The same would go for singles, 6 packs and a 24 pack case.

Thanks in advance