Yes I am little bit confused I must say.
Just to clarify what is done on NJE's XLs.
Select FMS so it is displayed on the PFD (purple/magenta).
Then select LNAV so the aircraft tracks the course for the NDB/VOR.
Also have the NAV/ADF displayed on the PFD (to monitor the actual tracking of the Navaid being used).
V/S for decent.
That's it.