The Tab Bar at the lower-right corner of the screen can be customized to have as many or as little tabs as you would like for your Switcher experience. By default, all of the Tabs are active. You can scroll between them by dragging your finger from left-to-right on the Tab Bar.
If you scroll the Tab Bar all the way to the right, you will see a tab that's a menu option, with three little dots. Tap on it.
You will now be able to customize the Tab Bar. The Outputs tab must always remain active, but the rest are optional. Add and remove the tabs as needed by tapping on the red circle icon beside each tab.
You can also slide the bar to the left in order to see and tap the Remove option.
Hold your finger down on any of the menu lines to drag the tabs and order them as desired.