Go to the sheet documentation and look up "attachers". I think that's exactly what you want. It will allow you to attach a trait or ability to all attack actions, for example. This is useful for things like the Rogue's Sneak Attack. Every time you roll attack damage, there will be an additional line at the bottom of your damage output that you can click to activate the extra damage ability. It's a little tricky to set up properly, but may be just what you are looking for. Here is the link to a video demonstrating the process, though the actual code is impossible to read on screen.