When paying a call, accompanied by ladies, you must enter the room behind them, and must not greet your hostess until they have done so.
The ladies must be the ones to terminate the call, not the man. Do not rise until they do, and, having made your adieux after them, and opened the door, follow them out of the room.
Should ladies be shown in while you are calling, rise immediately and remain standing until they are seated. When a lady takes her leave, rise also, and hold open the door for her as she leaves the room. You would not, of course, put yourself forward if a gentleman belonging to the house were present, unless you were nearer the door than he.
Source: The Penny Illustrated Paper and Illustrated Times, Saturday September 30, 1905, page 199, Issue 2314