It is related to this help question, where Tapio asks to change the layout of the navigation screen in a very specific way: if using voice commands when hiking, then hide the navigation cues (arrows). It appears that presets which can configure the layout of the navigation layout would solve both Tapio's use case and mine.
This help issue as asking the same, I think: https://help.locusmap.eu/topic/dashboard-option-to-hide-top-navigation-bar
This help issue as asking the same, I think: https://help.locusmap.eu/topic/dashboard-option-to-hide-top-navigation-bar