There are a couple different ways to monitor a SAFE-T tower. One way is to program in the tower frequency and every talkgroup (channel) you want to listen to; or the other way is to program in the tower frequency and listen to everyone who uses that tower, without programming in ANY talkgroups.
Uniden calls that "ID SCAN", and "ID SEARCH".
With ID SCAN you have to program all of the talkgroups you want to listen to, and you'll only hear those talkgroups.
With ID SEARCH you only program the tower frequency, and you'll hear everybody who uses that tower. (I call this listening to the tower; versus listening to a selected group of talkgroups).
When programming by hand (without the zip-code feature or using computer software), ID SEARCH is much simpler, faster, and easier. You could be up-and-running within 5 minutes after receiving your scanner.
I've been listening to SAFE-T for 15+ years and have never programmed in a talkgroup. I'd rather listen to the tower instead of a selected group of talkgroups. You'll catch more radio traffic by listening to the tower itself, such as units from surrounding counties, or state or federal agencies, plus you'll hear unknown talkgroups, undocumented talkgroups, and new talkgroups before they're ever listed in the Radio Reference database, and you'll never have to reprogram your scanner to hear them.
In closing, programming a BCD996P2 (even without a computer) doesn't have to be as intimidating as it seems.