Hi, i am running a game with a lot of different factions and races, but particularly i wanted to try this one: https://steamcommunity.com/sharedfiles/filedetails/?id=2012718526
However, while most of the other moded factions appear in the options list for your mod, this one does not. Anything i can do to make them appear?
Thanks in advance.

@Ellrich
Updated. Now it is possible.

Thank you for taking the time to help with this. However I am still a bit confused, because even though i set the faction to be an empire, and i set them to be ally ( for testing ) no matter how many royal factions i set to spawn, the royal factions still seem to be default ( judging by the fact that they are neutral instead of ally and they do not use the naming convensions of the race i chose ). So i assume they are still human. Do i have to somehow disable the default royal faction in order for the moded one to spawn? ( i did set the options than exit and restart rimworld )? I am using faction control in order to determine number and type of factions that can spawn.

There seems to be a compatibility issue with faction control.
Try changing the order of my mod and 'faction control'.
Or remove faction control and try.

Oh, i actually figured out what was going on, my bad! See, your mod changes moded factions in to royalty, not change the default royalty faction to the moded race. I got confused about that. Seems that how it works is that it turns moded factions in to royalty, but because it doesn't call them royalty ( they keep the naming conventions and world map icon they had before the mod ) i couldn't figure it out. But I disabled the default royalty faction and spawned with only the moded faction, and started with some psychic amplifiers and they doo indeed point to the moded faction as being the owners. So yeah, i just got confused because the name and icon of the moded faction doesn't change but functionally they doo seem to be royalty. Will need to test it to see if the quests work and so on.