Why not the demo?

Hello. I am new to speedrunning and am curios if I could just submit a run with the in game time instead of using a program like livesplit. Thank you.

I am curios if or how to make a new category extension. I am new to speedrunning mario 64 and speedrunning in general. I want to run the category of throwing the baby penguin off cool cool mountain but it does not exist.