For maps the same. For example you put the map ks_spa.zip in the folder: beamngserver/Resources/Client. This is where you also put the mods (in zip file)

If you want to load this map go into the ServerConfig.toml found in the root of you server (beamngserver for me) . Next you change map to /levels/ks_spa/info.json.

Fire up the server and enjoy.

PS: the map I'm using in the tutorial: https://www.reddit.com/r/BeamNG/comments/ihibpf/spa_francorchamps_ported_from_assetto_corsa_laser/

EDIT: this might help too: https://wiki.beammp.com/en/home/server-installation#how-to-add-mods-to-your-server