I would like to suggest that the app gives time options when switching off individual cameras or using the disarm mode. Possible options could be (1) 15 mins (2) 30 mins (3) 60 mins (4) Set Off Time (5) When I turn it back on. This is very useful especially when turning off or disarming and you forget to turn it back on or re-arm.
Welcome to the Forum, @khaleel_ali! 
For something like this (seems like two different suggestions), I would advise searching the Wishlist category to see if those particular requests have already been made in existing topics. In an individual Wishlist topic, you’ll find a Vote button above the initial post that you can use to show your support, and you’re encouraged to also share your use cases in the comments as a reply.