Question System Architect - Final Solution Build Excercise: US-2004

Dear Pega support crew,

In de System Architect final Exercise, US-2004: Provide users with log in screen:

In Dev Studio > App navigation under the Classes tab, I cant see some subsections that I should be able to see according to the solution video provided in the exercise (see screenshot provided). As shown on the screenshot, I can ‘LogIn’ and ‘VerifyNewCustomer_1’ on the right side of the screen when I click on the RentalReservation>User Interface>section (so I can continue the mission), but I can’t see them in the list itself in the navigation panel.

I am sorry if this is a simple thing, I am new to Pega and can’t find out how to let it show up. I did use the refresh button.

Thank you beforehand for your help.

Have a nice day and a great weekend!

With kind regards,
Jolien