Nothing, as long as you only enter the ones listed for the temp site. The "CC only" is simply a means to avoid having to enter all the frequencies. You can not add any others unless they show up as an update. Since it is an evolving, you probably should enter all three, but no others. This is why I said you should create a conventional system for all the unidentified frequencies. In so doing, you will hear most of the traffic, even though it is a trunking system. Later, as things get busy, you will miss a lot of the conversations in the conventional system. I have no experience with a P25 system, but I believe you will properly decode digital as a conventional system. You just won't be able to following the various moves to other frequencies cause by the control channel.When you hear digital noise, that will probably be another control channel.
You need to follow the traffic here as things progress:
http://forums.radioreference.com/pe...orum/267755-lancaster-county-uhf-testing.html and herfe:
http://forums.radioreference.com/pe...aster-county-dumps-ma-com-opensky-system.html
To take it one step further, you need to create a P25 "One-Freq Trunk" system in order to see radio IDS/talkgroups on a conventional frequency.
You should read up on trunking here:
Trunking Basics - The RadioReference Wiki