https://meta.discourse.org/t/navigation-sidebar-menu-display-control/277687/2
This theme component allows changing the display of navigation menu default and custom sections and/or links to staff-only or logged-in only. It also allows showing of a custom menu section to anonymous users only.
There are no formatting functions in this component other than display options for navigation menu sections to staff, logged-in, or anon users. For group-specific navigation sidebar menu display options, please use the group menu sections theme component. Thanks to @Nathan-nz for the show sidebar to logged-in only code.