Control Center: Add A User To A Group
Manually add a user to a group using the Control Center
To add a user to a group using the control center, first, navigate to your USERS section in the Control Center
Next, select the users that you'd like to add by checking the box next to their user account:
Then, click BATCH ACTIONS, and click GROUP SELECTED
From here, you can choose the group that you'd like to add those users to!