On the assumption that they are connected to the NVR using the ONVIF protocol, it depends on whether the cameras issue ONVIF motion event notifications.
You can check if motion event notifications are issued using ONVIF Device Manager
Download ODM for free. Device Manager for ONVIF-based Network video devices. ODM is a ONVIF protocol implementation of Network Video Client (NVC) to manage Network Video Transmitters (NVT), Network Video Storage (NVS) and Network Video Analytics (NVA) devices. Implements Discovery, Device...
sourceforge.net
ODM will find ONVIF devices on the same LAN automatically if their IP address is in the same range as that of the PC it's running on.
Example :
Is it possible to enable it for nvr recording? Yes, please read above posts
www.ipcamtalk.com