Search for specific applicants
If you know the details of the invited applicant, navigate to the "Invitees" tab, enter their details and click "Search".
You'll then see a list of all invited applicants in you Invited list that match your search.
See all invited applicants
If you want to see all of your invited applicants, leave everything blank and hit 'Search'. You can then see a full list, whether they are Bookable or not.
If you want to see which students are or aren't bookable, simply change the search parameters, eg: