BCD996XT Programing P25 Frequency with a NAC??

I have looked up and down the net, in manuals, in the forums, and I can't seem to find my answer.



I was wanting to know how do you program a single (non-trunk), "conventional" style P25 frequency and add a NAC to it?



I read something about entering the frequency in a conventional system and set the audio to "digital only", but there are some state frequencies I listen to that have the same frequencies but different NAC's.



Im new to the Uniden P25 setup, Ive have moistly dealt with GRE P25 scanners.



Software Im using is FreeScan. If there is a manual way to go in and add a NAC to a P25 conventional frequency then I can do that.



Thanks.