How to add another target to a cuelist?

what version of the software do you have installed?

Sorry, already found it out, one needs to enter the attributes settings for the additional targets as well if course.... Initially I thought they would be automatically copied

Another question though;
Exploring the use of stacks I found that one can only stack cues that are present in the playlist (buttons or faders). Doesn't that use a lot of unwanted buttons or faders?
Second question, is there a way to see the actual addresses being used by a attribute? It takes me forever to find out which attribute does what at certain fixtures, especially while all possible attributes are listed when one adds an attribute to a cue, even when they are not at all available on the fixture.

Thanks in advance