Kiosk mode or "at least" a way to disable system menu gestures?

We are developing applications that will not be released on the Meta store. These include utilities and tools for other teams to use, as well as games intended for dedicated contests where users are required to remain within the app (and again... I'm not talking about apps available on the store but apps that our final clients will use in they HQ or physical stores to show off their products).

Based on my understanding, many other developers are making similar requests. Is there a possibility to hide the system menus for the 'hand tracking' mode? Additionally, are there plans to introduce a 'kiosk' mode?