If there is an area where you don't want the camera to detect, here is an article to guide you to set a motion detection area for Reolink cameras via Reolink Client.

Applies to: All Reolink cameras/NVRs(except for battery-powered cameras without smart detection, such as Argus 2/Pro, Argus 2E/Eco, Reolink Go/Go PT)

Here is a video for your reference:

Step 1. Launch Reolink Client and log in to the camera, then click Camera Settings > Device > Alarm Settings. Then click "Non-Detection Zone".

the motion detection

Note: For battery-powered cameras with smart detection, the setup of the detection zone is slightly different. You can refer to How to Set up Detection Zone for Battery-powered Cameras via Reoink Client.

Step 2. Choose paint to create a zone over the area that you don't want to receive alerts about. Please don't forget to click the Save button to save your settings.

create no-alarm zones

Note: 
  1. Motions in the area covered with gray grids will not be detected.
  2. For Reolink Duo, Duo PoE and Duo WiFi, you need to Click Channel Selection to select a specific lens under Detection Zone. Then you can set up the motion detection zone for the two channels sparately.

the channel selection