Yes, the Lee County system should be programmed as a "MOT 800/900" trunking system. Scanning it conventionally, as you are doing now, will kind of work; but it will be very hard to follow conversations and you will not know which talkgroups you are listening to. I will try to walk you through the process of programming the system correctly below:
Press PGM, then F1 (NEW), then F1 (TGRP). Scroll to TSYS and make sure "NEW" is selected, then press SELect. Set the system type to MOT 800/900, and enter the system name (i.e. LEE CO TRS). Now select frequencies, enter 855.6125 and 856.4125, and save them.
Now scroll down to Atten and make sure it is off, set Narrow FM to No, Dwell to 10, and SuperTrack off. Set Multi-Site to Roam, Threshold Hi to 85 and Lo to 55.
Since the system has been rebanded, you will have to enter custom trunking tables; which is a slightly tedious, but necessary process. Scroll to T Tables, select Custom and press SELect. Now enter all six of the tables from the second chart
on this page. Each line on the chart is a separate table (01 through 06). After you complete this, you will have successfully completed programming the actual TSYS object, but the talkgroups remain.
When you save the TSYS object, the scanner should return to the new talkgroup screen. I would first create a group Wildcard, which essentially scans the system for talkgroups you don't have programmed. First select which scan lists you want the TGRP object to be in, then make sure the TGRP is assigned to the correct system (LEE CO TRS). Scroll to ID and press F3 (Dflt) to set the ID to Wildcard, set Type to Group, name the TGRP object, then save it. To program actual talkgroups, repeat this process, but instead of pressing F3 when you get to ID, press SELect and then enter a talkgroup ID from
this page.
As you can probably see, this is just the minimum that has to be programmed. Stuff like priority, backlight, LED colors and delay times can all be set pretty much however you want.
Hope this helps!