Enrolling users into a course using the Enrollments tab will give you enrollment based reporting data. To view this data, choose a course from the left hand side of the page. You can search for the course by typing in the course title in the search field.
Click on the "Show enrolled users" button to pull up the assigned users on the right hand side of the page. Click on the email address of the user you want to see reporting data on.
You will be able to view session completion data on the assigned course.