You're gonna kill me . . .

So what if I have a number of separate polygons, that I want to apply this boolean > difference to?

For example, a series of say 10 cylinders that you want to trim with another polygon?

I know it only does it with 2 polygons, so is there a way to group the 10 cylinders in such a way that it only considers it one? I've tried "group" and "parent" commands, and those aren't working.

Do I really have to do them each by hand?--one at a time?