The main menu is displayed in the top header of the U3Admin web page. As with all user interface elements the menu is responsive to changes in screen size...
On larger screen sizes the menu is displayed in full as below...
On smaller screen sizes the menu is displayed in compact form, the three bars often referred to as a hamburger menu...
Click the hamburger to access the menu...
Menu items are categorised into Menu Groups. Most groups have a title such as Admin, Course, Participation etc. Hover your mouse over groups that do not to discover their title.