I have been trying to figure out a way to do this with the current published mod tools/cheat engine tables, but there are some hiccups. If you use the "level 20 multiclass" mod, you can level up multiple classes as long as none of them exceed level 12, extending the level cap. (You can edit the files to make the level cap whatever you want) You would just need to cheat exp so you can level multiple classes at once. However, there are a few problems with doing it this way: Cantrip damage scales with total level at certain intervals, making them too powerful too earlySame with proficiency bonuses (affecting things like attack rolls and skill checks)You would need to adjust HP back to normal every time you level, since you get hit dice for each class level.Certain things in the game are confirmed to scale with your total level, like vendor inventories.You get spell slots too early if you multi-class caster classesTo combat these issues you would need to make a mod that lets you level up a class without it counting towards your total level, discount its hit dice, and not count it towards your spellcaster level.