This return button is sometimes labeled 'back'. How can I set it to enable a person playing the disc to be able to return to the last menu page during the running of a track and using the remote control?
Sorry, but I don't believe you have the correct understanding of what button labels on a remote have to do with what you are asking. I don't believe forum members will understand what your attempting. Please try to rephrase your situation with video and what you want to be able to execute with the remote control.
DVD standards were set up many years ago - due to the partial fact that they were complicated and written in Japanese language - made it a pain for later manufacturers of firmware for set-top players to interpret all of the possible functions.
A button toggle usually called prev/next is meant to trip around chapters of a DVD video asset when it had mutiple VTS (video title sets) -ahh don't ask.
A button labeled menu/or title can get you a bail on the current on-going video play. Sometimes this could be interpreted as menu return - but that gets tricky depending on the firmware aboard your set-top player.
Authoring systems like DVDAPro allow you to program hard functions into the button - such as an on-screen video button during video play that will allow you to jump somewhere predefined. Also you can program end of video segments to have certain end actions which can include return to main menu, or last previous used menu.