1. After you install the extension you should see a field called:  MatterportID

2. Take your Matterport URL: https://my.matterport.com/show/?m=zFZKnpzH6nw and copy the text after the = In this case: zFZKnpzH6nw

3. Enter it into the field: MatterportID and save the record.

4. You should see your Matterport embedded in the related list: