Galaxy A9+ android as a controller and zoom room and hiding android options

[Jtown82]

I am wanting to switch our Zoom room Controllers from Ipads to Androids.  I have a Galaxy A9+ android tablet running android 14, One UI ver 6.0.  When Zoom Rooms Controller app is installed it all works, but it i not hiding the built in android functions at the bottom that minimizes apps, closes apps ect.  I for the life of me cannot find an option to hide all this so normal users cannot accidentally minimize/close the zoom room app as its running.   Is this just how the Androids are and I'm stuck with it? Can they be more like an Ipad where nothing is available but the zoom room app and all that responds.  I have searched the zoom rooms controller app settings to no avail.