the download Sentinel for BCD536HP, and append some systems to A faVorite list or 2 or 3 or 99, somethings force you to use the 'EDIT' to edit them after they are appended (right click and pick append to append or INSert).
http://info.uniden.com/twiki/pub/UnidenMan4/BCD536HP/BCDx36HP_Sentinel_Version_1_06_00.zip
Uniden BCD536HP Scanner
faVorites quick keys 01
system quick keys 02
department/site quick keys 03
01.02.03
in the departments you could use the 0's for Fire, 10's for EMS, 20's Local PD, 30's State Police, 40's Air Com's, 50s........... and 90's for sites 90 North, 91 East, 92 West, 93 South, 94 NE, 95, NW, 96 SE, 97 SW, 98ENE, 99WNW
If you assign a 'Department' and a 'Site" the same quick key, you block-out the 'Site & Department' and get a 'Nothing to Scan" message,
So, any digital system, will require a site, and for some reason that layer is under 'Department', and not under the 'System' layer.
There are 100 faVorite 0-99, 100 System 0-99, 100 Dept & Site 0-99 Quick Keys.
I just think of it as a 3 layer file system starting with V-Folders (faVorite), then system, and then department & site.