All cameras recording at the same time and don’t want them to

Hi, We have an outdoor camera that records when our indoor camera is triggered. How do I stop this from happening as it is running down our outdoor battery really quickly? I think it’s to do with linked devices. I want them linked in the sense of having them both on the Home Screen of the app, just don’t want them both recording at the same time as it’s not necessary. I hope you can help!Thanks