Linking your Fibaro FGMS-001 ZW5 Motion Sensor with other compatible Z-Wave devices is termed as Association. In order to do this, you need a Home Center controller from FIBARO. Follow the below procedure to carry out Association process:
Click on the Settings icon from the device options
Select Advanced → Setting Association.
Specify the group and device to which your sensor needs to be associated.
Save the changes and wait for a while for the configuration process to get completed.