From the Account student list:

1. From the upper navigation menu, click on “Dashboard”.
2. Click on the “Students” tab.

Sort the table by status, students that are linked with a license have a “Premium Account” status.

From the licenses page:

1. From the upper navigation menu click on licenses.
2. You will be able to view all the account licenses.
3. Each license card has “View more details” button
4. Click on the “View more details” button to see all the students that are linked to the license.