Requirements:

Mission Maker (https://www.gta5-mods.com/scripts/mission-maker)

A Trainer which allows you to enable MPMaps (https://www.gta5-mods.com/scripts/simple-trainer-for-gtav) (MPMaps toggle option can be found under "Teleporting>Other Teleports").



Highly suggested mods to use alongside:

Score Controller (https://github.com/tomilovsenya/ScoreController/releases)

Heist Music Over Lowriders Music (https://www.gta5-mods.com/misc/heists-music-over-lowriders-music)

Don't Writhe! (https://www.gta5-mods.com/scripts/don-t-writhe)

Euphoria Ragdoll Overhaul (https://www.gta5-mods.com/misc/euphoria-ragdoll-overhaul-ero)



Install:

Copy the "MissionMaker" folder inside your scripts folder. If it asks you to overwrite anything, make sure you allow it.

Make sure MPMaps is enabled before playing any of the missions otherwise you'll just load into nothing!!! You DO NOT need the Enable All Interiors mod, you only need to enable MPMaps through a Trainer. The mission's triggers will handle the rest.

The missions are designed to be as lightweight as possible, not requiring a lot of custom mods or tinkering to work properly. You pretty much just need to enable MPMaps and you're set.