For the spawning scripts,
o. First start out with a simple script that will start a timer at which the first team will spawn. (Make sure this script is also in the SkirmishGLA folder!)
p. Now create a script with a condition of that timer expiring.
i. For the action, select, Team/Create/Spawn a reinforcement team.
1. For the team, select Wave 1 and for the waypoint, choose the spawn waypoint you created.