Adding existing learners to a new course, or an existing course that they aren't currently assigned to, is a very easy process. Follow these steps, and also watch our video for reference:
Select the main Learners tab on your admin toolbar.
Search for your desired learner, then select the Edit pencil icon.
A pop-up will appear from which you can assign your existing learner to any of the public courses on your school, by selecting from the drop-down menu.
Click the Update Learner button to confirm.