Please follow the below steps to crop the ONVIF camera image in the device:
Step 1: Click on Settings.
Step 2: Navigate to Configuration and click Next.
Step 3: Select ONVIF Camera.
Step 4: Once the camera is added, click on the Preview icon for the respective camera.
Step 5: By default, the option will be Disable Crop. Change it to Enable Crop, adjust the required crop area on the image, and close the preview.
Image 1: 
Image 2:

Note: After closing the preview, the cropped image will be reflected in Forge under the Additional Images section.
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