Etiquette Question - Escorting Guests to a Conference Room

Dear Paula,

I am the Executive Assistant to the President of a small manufacturing company and when the president has a meeting here at the facility, I usually go to the lobby and bring the attendees to the conference room.

When I am escorting outside visitors down the rather long hallway to the main conference room, should I be walking in front of them (leading the way) or beside them (guiding them along)?

Please advise as this situation comes up rather often.

Best regards,
Karen A. Becker
Executive Assistant to
Richard C. Spanier, President/CEO
Rudolph Research Analytical