[2023] Two homesteads?

No, two homesteads are not possible. If you used NoCollaboration preset as intended for that amount of players, you get additional claim stakes and claims like on Update 9 since Hotfix 10.0.2, though. If your world was created before, instructions on how to apply that config can be found in the release notes:
https://steamcommunity.com/games/382310/announcements/detail/3897366645124411915

It will use the old legacy system as has been known in Update 9 with a few adjustments necessary due to Update 10 changes - for example it will also use the claiming system of Update 10 with claims and stakes, just no influence range. Note that you cannot turn off settlements on a world that had it on at any point, that will corrupt the savegame and crash the server. Settlements off is not as stable as settlements on, as that is a legacy mode, there is several issues known that we will address through maintenance updates in January.