You can use the following keyboard shortcuts to navigate throughout iPadOS 15:
You can even bring up the dock or App Library with a global keyboard shortcut. Using the Globe key and the keyboard, you can put two apps into Split Screen, put an app into Slide Over, or create a new Quick Note in Notes. The Globe key (bottom left Fn) can be held down much like the Command key to execute iPadOS 15 shortcuts. If you really want to take advantage of all the iPad’s greatest features, an external keyboard and the Globe key are going to unlock a new level of ease. The Globe key is going to get a workout in iPadOS 15.