I wanna start speedrunning 1.16 RSG and I am wondering how to set up multiple Minecraft instances using multimc?

Edit: Also how do I set up a macro to automatically reset?

Edit 2.0: sorry the macro tutorial is in the video

Here is the original Tutorial by the script developer

I just started running 1.16 RSG recently, and I don't find multiple instances necessary. They are mostly used when trying to get a WR or PB under 15 minutes. I haven't ever seen someone speedrunning with MultiMC who's PB isn't under at least 20 minutes.

You dont need to multi instance. Auto Reset Mod and Fast Reset Mod is fine. Also you should get Starlight. Here is every necessarry Mod: https://www.minecraftspeedrunning.com/public-resources/mods (Starlight is not Compatible with Phosphor, but Starlight is better)