Problem:
You have a lot of different users that access different folders in SharePoint and you want to organize them via groups.
Solution:
The problem is, you need to create groups within SharePoint, not the regular Admin Centre.
Creating a group:
- Open up SharePoint Site
- Go into Docs
- Click on the cog in the upper right
- Click on Site permissions
- Advanced permissions setting
Setting up permissions:
- Make sure you’re in Classic Experience
- Drill down to the necessary folder
- Click on Share
- Click on Shared With
- Click on Advanced
- Click on Stop Inheriting Permissions
- Remove the necessary groups