Division of electrical wiring into groups in a 3-storey building

Hello, I myself am a beginner electrician, so I decided to change all the electrics in my country house. I watched a lot of videos on distribution boxes and bringing branches to them. I want to understand how much it is better to bring branches to the distribution box when my house consists of 3 floors, what is the best way to do it, one branch - switches and lights, the next branch - sockets, or can one floor - one branch for all groups?

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