Wanted to share what I did with Charter Flight system in last few hours:
We didn't want to change our VA CallSign (AirMAK - MKD) when pilots fly charters (representing our VA on VATSIM).
So, I added VA with 4-characters ICAO: MKD0 -- Of course, I had to change structure of database (length of code txt field needs to be 4 - in all tables that uses it).
Then, I removed (changed flight numbers) flights from regular schedule that start with 0 - so, from now on, charter flights, created with Charter Filght System addon will be MKD0###, Charters that pilots fly without booking will be MKD0## and all Scheduled flights are MKD1## to MKD9####
And, of course, to solve the problem with empty "Flight Type" field, I replaced "CH" in all files with "MKD0" !!
Now, let's give it to some pilots to test this hehehe...
Cheerz!!!