Bloc size of sweet home and camera position

[myocean]

For Home assistant I need to use 3D rendering.
I can generate a 3D rendering with all lamp off and after generate a 3D rendering with lamp on.
After I need to cut all the house room for Home Assitant.

I can do this the first time easily.

But If I want change the structure of the house or change the furniture or the lamps... I need do again all the picture !

Is it possible to save or block the camera position and maybe the size of the screeen (if I change my computer for exemple) ? for to keep all the time the same camera direction and angle

I don't know if I'm clear for my question ?