For the present day, almost all settings are automatically saved. Given that secondary sensors are often very different from the primary sensor in terms of capabilities, the app saves many of the settings related to image or sensor control separately for each sensor.
There is currently no mechanism in the app that allows you to save a specific set of settings to a preset. There are modes and settings whose operation would have to be reworked before the implementation of saving a common preset. We know very well that this would be convenient, but "Rome was not built in a day".