The Instructor Role plugin supports and provides access to various LearnDash groups-related options for instructors like creating courses/lessons and topics and managing their enrolled students.
Instructors have the ability to create and manage groups similar to a LearnDash Group Leader.
Instructors can create new groups and add any student enrolled in any courses created by therespective Instructoror shared with that Instructoronly.
Instructors can then also assign themselves or any other group leader as a group leader for their groups.