Creating stages
So, creating stages is as easy as it could be, just follow the first step of going to the instance’s config folder and in there you should find a file called “thitemstages-common.toml” (File example #1), open it with your preferred text editor and start creating stages!

So the contents of the config file should be similar to these:
["General Options"] #List all the stages that you want to have. stages = ["age_1", "age_2"] #Set this value to 'true' whenever you're having issues, this will allow the mod to output everything it tries to do in the log. debugMode = trueTo create a stage you simply just list another stage in the “stages” parameter.
Example: In the code provided above we have: “stages = ["age_1", "age_2"]” if we wanted to add a stage named “nether” we should modify that parameter to look something like this: “stages = ["age_1","age_2", "nether"]”
Now that you know how to create stages let’s get to creating restrictions