[klem]

Open Full Mission Builder
File... Load Map
Zoom in to see your Airfield
View...Object Browser
Type Tab... Select Spawn Area
Ctrl+LeftClick within Airfield that is to have Spawn Area
Spawn Area Tab.........
.........Select Army
.........Select Country
.........Select /Bomber/Fighter (Early)/Fighter (Late)/
.........Select Squadron/Unit
.........Set Altitude as 0
.........Set Max Planes to be available at the Spawn Area (this means you can run out of flyable planes at that spawn area if they are all taken)
.........Check Parachute
.........Check Spawn Parked
Aircraft Tab
.........Delete All (moves all aircraft from left to right window pane)
.........Select required aircraft in right pane and click on Add (moves it to left pane)
.........You can select the Weapons by Selecting a/c in left pane and click on Weapons (otherwise you get default weapons).
................Note! You can select a whole batch of aircraft by Country and/or Year and/or Category at the bottom of the Tab

Save Mission.

Repeat for more Spawn Areas (although its less confusing to pick them in the server if you only have one at each airfield)

Repeat for other airfields and other countries.

You can add AI aircraft and waypoints (as you do in Co-Ops) and they will fly too. So a dogfight server can have AI missions flying.

(NOTE! If you create a co-op mission, there is a bug and player aircraft will ALL spawn at the same point and NOT on the runway. So you must spawn one at a time and taxi off the spawn point before the next person spawns.)

The aircraft are selected in the dogfight server by selecting Army, Selecting Airfiled then selecting the required aircraft type on the right hand side of the screen. The aircraft that you selected to be available will be listed there.