I'm fairly new to CC3 and I'm working on a few different maps for it. I've got Dungeon designer and city designer as well. Is there a way to use the different functionality of them all on one map? Essentially, is there a way on a single map to use dungeon designers background, use city designers roads on it, and take symbols from all three?

In addition, I really would like to improve my symbol collection, is there a good place for free symbols out there?