https://www.speedrun.com/multimarioce?h=Pending&x=n2ynge1k To have categories added to leaderboards we have this pending category that you have to submit to first with the category rules if it isn't obvious what exactly the rules have to be (In this case it is so its not needed). Usually for "normal" Multi Mario submissions we'd need 3 runs from different runners for a new category to be listed but NSMB Series is treated differently since its more "outside-ish" and only needs 1 run to get a category. In this case it would only be featured on the Category Extensions board for now.
This is mainly done to avoid empty leaderboards just because someone has an idea. If it is actually a good idea, people would already run it, right?
question, I've been planning to do a 100% run of the series for a while just never got around to it, if we want to submit a run the category do we need a video of the run, I'm assuming yes but thought I'd ask anyways
It is part of the MMG rules. If somebody wants a category to exist, then they have to have a recorded run, and submitted to "pending" on the CE leaderboard.
You can now submit runs to the 602 and 1862 leaderboards under the TA filter if you took breaks for sleep and paused the timer! Rules will be more in depth on the category pages on the leaderboard.