ZOTAC GAMING ZONE - How do I remap the controller buttons on the ZONE?

You can do so through the One Launcher, under the "Controller" tab of the settings menu. After going into that tab, select "Gamepad" mode if you want to make a profile for a specific game, or "desktop" if you want to modify the desktop control scheme. Tap the "+" icon to create a new profile, or choose an existing one to modify it. 

Inside the editing menu, simply select an input you want to modify, then press the button you'd like the controller to mirror. Exit the page to conclude editing.

To use controller profiles in game, select a game in your library and go into the game's page. On the right, there will be a controller icon. Tap on it to select which profile to use in-game. The launcher will automatically detect when the game is running, and switch controller profiles accordingly.