For MX support post at the mx-system.com site... as quoted countless times there, *because* it's fully modular unlike other portals, it doesn't touch phpBB files; therefore, its nav menu isn't added to phpBB, which would require MODding.
There's a beta MOD that lets you do this (also a stable one). Look around for it, it's not too hard to find.
Former phpBB MOD Team member
No private support is offered.
"There’s too many things to get done, and I’m running out of days..."