I was not aware of this plugin at all. Great plugin for handling occupancy issues.
Since many of us have DSC alarm systems with motion sensors and are using the DSC plugin, I thought about integrating those sensors in the Occupatum plugin. I made some minor changes to support DSC Alarm Motion Sensor zones and added a few other minor updates.
Of note: I made the changes first to v0.0.4 plugin under Python 2.7 and tested this version. Thanks to Durosity for also testing the plugin. I then transferred those changes to v2022.0.0 under Python 3 but did not test this version since I have not yet installed the latest Indigo app. This version was uploaded to Github for review.