This workshop is an extension of the original one made by L3afa. Idea credits go to them.
Since this is an enhancement, it's adviced to create a "Friendly No Kill!" room first. (Code is RJJ01 if you don't see it under "popular" tab)
Once it's created, you need to access workshops settings which looks like the following image:
Advice: If you're already in a custom game and you're the Guardian, you can reach the same settings screen by the pause menu:
Once there, you should see an additional button. Click it to setup everything and wait a few seconds in case it frozes.
Note: If you don't see the button, make sure you have clicked the button in this website saying "Copy workshop code!"
If everything worked correctly, you should see the following mode name by default: