I was messing around with the "Kill Enemies" thing and I saw the list of ships and thought it'd be cool if there was a second ship that joined me in battle. I could talk to it first, it'd talk back to me, then we'd team up and destroy the enemy (sort of like, "Thanks for coming", "No problem. Ready to kill something?" "Yeah, let's do it." kind of thing. )
Anyone know how this is possible [if it is]? Thanks!
If you go to your map editor, in the section that has the NPC groups for placement, not contact list, you can place any of those groups down. If the group is from a faction friendly to the player then they will help the player, if not then they will be enemies.
So for a Federation mission, you'll have to pick a group from the list of Federation encounter groups available since that is the only faction group friendly to Fed players.
You won't be able to use a group as a contact to talk to, however. You'll have to use pop up dialogue triggered by waypoints or interaction or something.
If you want that group to only show up after a certain point, you can select that group and go into the states tab on the bottom. This lets you make them show up at a certain point in the story instead of always being there.