custom starting location

Does anyone know how i make a custom starting location on my server , example l- i have a custom building that i want all new players to start in a desinated room in this building on this planet . Not to sure how i place a marker or what marker so they all spawn after there first join on my server (starting location)

thanks

 

https://empyriononline.com/threads/how-to-make-a-poi-a-start-location-for-player.12799/