On default motion detection is done via Mirasys VMS. There is also possibility use camera own motion detection.
To use this
Check that manufacturer is supported
Check Supported Camera list
SD card for storing
On configuration side
First enable camera motion detection in camera settings
Configure motion detection levels in camera settings
Add camera to Mirasys VMS
Change in System Manager Cameras tab that this camera is using VMS and Camera hardware for motion detection
Set in scheduler side continuously recording
You can also set SD card to camera to store data there and if there is lost connection etc. system can fetch data from there.