I am an outsider and would like to know the requirements of each category, when to start my time, when to end my time, etc. But unfortunately, there is nothing in the rules category and I am unsure of what to do.

Looks like it's only the 30fps categories that don't have rules

It's a speedrun.com bug. Rules will be up as soon as the issue fixes. You can check up the 60 FPS rules, they are absolutely the same.

/fixed