Combined Arms - how to set it up for Multiplayer

[Jel]

So i played in SP and now want some CA units on my server.
I placed the units where i want them and ticked the "can be controlled by player" box.
Now when ingame i try pressing alt+j to hop into the tank like i do in SP, my MP game tells me "this vehicle is unavailable". I also can´t see it in the role selection screen.
What did i miss ?

[Jel]

So it seems i figured it out: Selecting "roles" on the left and checking "pilot can control ground units" along with at least 1 role "gamemaster", "Jtac" or "spectator".
Units now can be controlled - only thing in wonder is how i can protect those roles with a password so that not everyone is able to use them. Is this possible ?
Additionaly: What does "gamemaster" mean here ?

[frek-b]

"Game Master. Can observe and play as JTAC and control air and ground AI units for both sides.
The Game Master can view all units. As a Game Master, you can dynamically alter the ground
war during the mission. This can also be a very useful mode when acting as an instructor."
5th page of the Manual

[Jel]

nice, thanks.
So since it´s quite a powerful role, i wonder if and how this can be protected by a password.