BuddyPress.org

The last one’s a winner. Works like a charm.

“Nav Menu Roles” plug-in is compatible up to 3.8.1.

https://wordpress.org/plugins/nav-menu-roles/

It’s super easy to install, and requires no configuration. Just go into

Dashboard -> Appearance -> Menus

once you’ve activated it, and it’s options automatically show up when you’re configuring menu items, even if they are not BuddyPress components. Great if you’re linking to a specific doc.

Hopefully this will help someone else out. Drove me mad.

Susan.