Add an Existing User to a Channel
Instructions
Log into the Builder
Navigate to 'Channels & Users' > 'Channels' > Select the Channel you wish to add users to
On the Members List page select 'Add Users'
In the pop up box, find the user by scrolling through the list or by using the search bar and typing in their name or email address.
Once you find the user you wish to add, click on the box to the left of their name
Choose 'Add Selected'
A confirmation box will appear and the user you added should now appear in your Channel's Members List