If you've downloaded the two-up score sheet template from the IDPA website, you can print barcode labels for club matches on them directly.

First print (or photocopy) the number of score sheets you need.

Then load them into your printer and run addlabel.exe from the folder in which you've installed ForScore.

 

The reason the labels repeat the division information is in case you want to split the score sheets with a paper cutter and staple them as individual stages.  This way, if you do so each sheet will still have division information.