We have 4/8 players in our game, but can't seem to figure out how to get it started. Yes, we're all new to this

When 8 players join, the game will start automatically, giving you a 4 hour window before it starts.
If you do not wish to wait that long, the person who created the game can start the game manually.

Do realize starting a game early resizes the map to a smaller size, randomized start positions, and the game waits 8 hours instead of 4hrs to start.