1. In the left menu, go into layers and select one of the gameplay layer (64, 32, 16). Vehicles, spawnpoints and so on will appear.
2. Do not use these spawners, just leave that empty when creating the object spawner. Then choose whatever vehicle you want for each team from tweak menu on the right.
3. To play your map ingame, you need to pack it using the pack-map.py file in the main mod folder.
You should also join our discord (possible from our mainpage now). We have a channel for mapping and modding.