What can I do on the Managing instructor learner tab at the course settings?

Link specific learners to an activity. Only these learners are able to access this activity. In this way you can create subgroups within courses in which learners can then work together on activities.

Please note:This tab is only shown when there are activities in the template with the condition 'When a learner has been granted explicit access'. See: General settings of activities.

Where can I link/unlink activities to learners?

Expand the template under the Templates tab and click the name of the course. Then go to Manage learner conditions.

On the right side you can select a learner, on the left side you select a activity. By clicking Link, you can link the learners to a activity. By clicking Unlink, you can unlink them. There are no notifications being send when doing this.