You need to create multiple Activities. Each Activity contains X number of devises and when you want to use different Devises you switch between Activities. If your “Watch TV” includes the cable box and Netflix is an app on the TV so you only need to control the TV then create an Activity called “Watch Apps” that only includes the TV. When you switch between “Watch TV” and “Watch Apps” the TV will change input, swap the buttons to control only the TV and can turn the cable box off if you wish, all automatically. You will also need a separate “Watch PS5” Activity with TV and PS5 included. As an aside “Watch TV” would be a better name for just the TV and all its own apps as you only need the TV and “Watch Cable” when the Activity includes the TV and cable box. Hope this helps.