It's also very useful in acquiring the LCN on EDACS systems and channel assignments on UHF and VHF Motorola systems.
You can also set different priority levels. Say you have Fire Dispatch set to priority level 10, PD Dispatch to level 2 and the Emergency "Man Down" talk group to 1. Then in the middle of an Animal Control TG conversation, if the FD comes on, UniTrunker will send the scanner to the FD TG. If the Man Down TG becomes active, it will override everything, no matter whether there are comms on any of the other priority TGs.
It's all set up the way you want it. I have it running here 24/7 to see when new TGs are added or when certain radios affiliate or de-affiliate to/from the system.