User to edit (Learndash Group Leader)

When logged in as a Learndash Group Leader (so somewhere between a Subscriber and an Administrator), I am able to see a list of all users in the ‘User to edit’ drop-down. They would ideally either not have this drop down at all so they can just update their own details, or only see the individuals in the group for which they are a Group Leader. Are either of these options possible?

The page I need help with: [log in to see the link]