On my trailer I have Main, Air conditioner, Microwave, General 1 & general 2. General 1 is the GFI circuit which is the outside glug, Fridge plug in the outside fridge compartment, kitchen counter plug, bathroom counter plug and the converter plug under the sink area (all susceptible to getting wet. General 2 is all other inside plugs which are receptacles in the bedroom, one next to the entry door, one at the dinette and one at the bunk area.
Gen/COM for yours is probably everything else that isn't CFI. Best way to find out is turn it off and see which are the working GFI outlets.