We are on discord if you are need faster help.
I have included instructions half way down on how to create a game.
You will want a profile which includes the official Barbarian modes mod.
You will need to tick the Barbarian Clans and must have the number of maximum citiystates set so they can convert in to citystates.
Here are my quick instructions for creating a game.
PYDT Website
Create your PYDT game on the website.
Consider declaring the game a friendly game. PYDT Friendly or Club Rules Game
Advertise here and/or on the official PYDT discord.
Once the PYDT website game is started…
In CIV
Create a blank profile with only DLC and game play mods you want.
Multiplayer / Hot Seat
Modify the settings for map / size / environment / etc.
Confirm settings which takes you to the player list.
Set all players to human and set their civ leader if they they selected one on the website.
Play your first turn, once it says Player 2, save the game and upload the save via the game’s website page (for the initial loading or first turn, this is required), afterwhich you play your turns with the client if you want.
Here is further help on mods.