Our office workflow in SU2020 and before which we discovered by trial an error:
On a Layer ‘Option’: A viewport of the with a scene that only saves Geometry called ‘Option Existing’ or ‘Option Proposed’
On a layer above called ‘Model’: The drawing viewports saved only the Camera and the Active section. This is located above the option layer.
In this way, changing the Geometry option Layout updates all the views plans etc on that page and make it very easy to change options.
This reduces the number of scenes we would have to save in each Sketchup file. 4 geometry and 20 drawings views.
This behaviour is broken in SU 2021. So we now have to set up views with the geometry as well. So instead of 24 scenes, we have to manage 80. We will not be upgrading to 2021.