Adding player spawns
From Mod Wiki
We are almost ready to play our map, but first we need to add some player spawns. Lets add some GDF spawns to the southern region of the map, where we would like our GDF base. GDF spawns are "info_team_gdf_spawn". By adding them you should see a player model appear, handy for orientating them in the world.
Entity keys
For our GDF spawns, lets make them parachute spawns by adding a key pair of parachute1. It is not necessary to offset parachute spawns vertically from the ground. However, if you would like the players to parachute or fall from greater heights, feel free to raise them a little.