Set game to Friends Only

When choosing your ship in the main menu you should have the option to start a friends only voyage. I understand the game is meant to be played with a group. However, it is annoying when a friend has to leave their active game or vise versa just to join because all of the slots are taken in your game. Your friend should have priority over random people be it setting the group to friends only or allowing to manually leave slots open for friends to join. If you don't have people to play with open matchmaking should be a separate option.