The app create a software button in the center bottom of you screen and add several actions to this button.
_Home
_Recent apps
_Back
_Settings
_Pull down notification panel
_Start a selected app
_[Pro version] take a screenshot
_[Pro version] lock the screen
_[Pro version] display quick settings
_[Pro version] start power menu
The pro version gives you more actions as well as other buttons to place on the right and left bottom corners of your screen.
The only administrator policy used is
and it is used to lock the device when the user has done the selected action.
_Read Phone State => Needed (and only used) to load applications list because of some manufacturers limitations.
_Write Internal Storage => Save screenshots in the device.