[Ole]

While building a small 8actually my first) mission, I encountered the following problem:

I got Alpha, Beta and Gamma wings, all of them being friendly. Since Beta and Gamma will later turn hostile, I'd like for them not to show up during briefing (while choosing ships and weapons loadout). I already managed to prevent the player from changing their ships or weapons, but I've been unable to prevent both wings from showing up. Is there any way I can do that? It's actually not that important in this mission, but I'd like to know anyway, in case I need to do that again sometime in the future

[FUBAR-BDHR]

Easiest way is to not name them beta, gamma, delta, or epsilon.  Name them something else and they won't show up. 

If your campaign isn't going to use beta or gamma wing as player wings then you can also change the default player wings under custom wing names in the mission spec editor.  this way you could have say Alpha and Theta be player wings instead of alpha and beta.