How can I randomize players between 3 teams, while there being no chance of no players on 1 team?

So, I want to randomize players between 3 teams based on a percentage. Green Team: 70% chance Red Team: 20% chance Blue Team: 10% chance

I currently have a math.random setup, randomizing players based on those percentages, but that means that there is always a chance that no players will spawn on 1 team. How can I set it up so that at least 1 player always spawns on each team?

You don't have to provide code if you don't want to, but only explain your theory. Thanks!

Set the AutoAssignable property of Team to true, I think that works for this situation. It might not work, just giving a suggestion.