Has your device transitioned to an Edge driver or is it still on a DTH? The DTH for these devices used custom commands that aren’t compatible with the new app (though webCoRE was able to access them). With webCoRE no longer available, you need to put your device on the driver linked below to be able to control its settings.
With that driver in place, you can schedule operating mode changes between occupancy, vacancy and manual using the routines in the app.