If you are the Account Owner or Administrator, you can easily make any any changes on users' permissions.
- Go to Manage People under Brand Settings
Only Account Owners and users with Admin permissions can add or remove channels, among other activities.
Learn more about user permissions here.
- Select the user and modify the user's permissions by clicking on the access level you want the user to have for each channel in the brand.
- Click on Save and you're done!
Important: To configure permissions for users for the whole account, click on Account People.