Depends on what you want to accomplish with each camera.
You could turn off the cancelled alerts showing up to the left if that eases your mind, or you define the areas you want your cameras to be triggered on for Deepstack to analyze.
Is your image above the alerts or the BVR files. Take a look at the alerts to see what is triggering it.
For example, if you motion zone is the whole field of view, then any car that goes by will trigger the analysis.
If all you care about is a person coming up your walkway, then make a zone just for that area:
And yes as
@sebastiantombs suggests, just do DeepStack with one camera until you figure out the nuances of it and then deploy it for more cameras.