You can enroll users in a learning plan from the Learning Plans page.
To do so, select the Enroll Users icon in a learning plan's row (in the list of learning plans on the management page), then press Assign Users in the learning plan’s page. In the pop-up box, you can select individual users, groups, or branches. Press Confirm to complete the process.
When you enroll users in a learning plan, you automatically enroll them in all of the courses composing the learning plan.