(Note: You need Admin rights for do his action)
- Login to portal.office.com with any browser
- Click on Admin
- Click on user
- Click Active user
- In search bar type user name
- Select user ex. Amit Mishra (amit.mishra@domain.com)
- You can see a one option PRODUCT LICENSEN
- Now you can see the License Just uncheck from Business Basic and Assign Business Premium.