1. How am I supposed to configure the JSON file structure? Do I need to create a new folder in the config/randomportals directory for each portal type, or add them to config/randomportals/custom_nether_portal?

2. What's the difference between defaultDimensionID in the group_data.json file and "dimensionID" in the 0.json file? The wiki doesn't try to explain the second one.

3. I set up something a portal that sort of worked. I created a new filed in config/randomportals/custom_nether_portal named 75.json and set the dimension ID to 75. It only worked in dimension 75, but I couldn't create a portal in the overworld. What did I do wrong?

1. I've updated the documentation to specify the file structure.

2. The function of defaultDimensionID is explained in reference_portal/group_data.json, but in short, it's the dimension ID that RandomPortals falls back to when it can't determine which dimension a portal should teleport to.

3. It's strange that it worked at all. That directory shouldn't be recognized by RandomPortals.

EDIT: Unless you actually put it in config/randomportals/portal_types/custom_nether_portal.

That's the path I put it in. My bad.