Correct, you will only have access to guide settings in the guiding tab.
Going to "main camera" with your guide camera only allow better visualisation and possibility to check focus, stars (star detect), exposure and gain... to validate what your guiding camera can see.
Normally, once your setup is tuned properly, your guiding parameters will not require to be twicked too much, except gain/exposure to ensure you have proper star shape for guiding optimally... so no real need after to switch or display guide camera in the main screen.