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, and rearrange them by using the horizontal set of three lines beside each tab.