Ingame use the command /spaceadmin gui
after that click the yellow flower icon.
Then click the GREEN wool block to create a new world.
Enter its name and use the gui to fully configurate it.
Anything changed or edited in the gui is saved DIRECTLY
however will require a restart to take effect.
Using the Worldsettings file
The most easy way is to copy over a world and edit it directly however here is the Gianma example with explanations: (this is not always up2date please check the worldsettings file for the current options)
Gianma:#the worldnameserver:server#the bungeecord server if used otherwise keep it like thispermission:world.Gianma#the permission noderadiation:0#the radiation level between 0 and 4temperature:4#the temperature level between 0 and 4mobssystem:false#should we dress the mobs according to space?disabledmobs:#disable certain mobs from spawning in that world - SPIDER - WITCH - PHANTOM - ZOMBIE_VILLAGER - ZOMBIE - ENDERMAN - SKELETON - HUSK - STRAYairsystem:true#do we need a suit with air to survive?iconurl: [url here] #the skin texture from minecraft for the world head icon iconslot:7#the slot in the row the icon is on the galaxy map (0-8)iconrow:3#the slot in the row the icon is on the galaxy map (0-4)lowgravity:true#do we have low gravity?enablestructures:true#Should POI's generate here?galaxy:Obasus#in which galaxy is this worldmeteorstrikes:true#are there occasional meteor strikes?preventleavedecay:true#should the leaves never decay?generator:type:MCGWG#The generator MCGWG is the custom one u can altercustombiomedata:roughland#the biomedatafile names seperated with ,liquidlevel:40#the layer til the ocean needs to beliquidtype:WATER#the blocktype for the ocean (woo DIAMOND oceans nah bad idea) roughness:8#how steep and direct different changes are in the worldXscaling:0.005#these are scaling parimeters u need to try for yourselfYscaling:0.005#they will alter the height of hills and shape of itZscaling:0.005#or make it completely flat its up to youWscaling:0.005dungeons:enabled:false#do dungeons spawn in here?themes:#Which themes should we use? - abandonedbaseloottables:#Which loot tables can be found inside of the dungeon? - 1 - 2