As in my aircraft there is a NAV equipment I have entered this line in the panel.xml
<Radios com-count="0" nav-count="1" marker-beacon="true"> <Nav index="1" /> </Radios>
But I would like to have no NAV control shown in the G3X top bar but currently there is only the option to select the location between PFD, MFD or BOTH instead I would like to have also NONE