As a Noun:
1. A person who works in a cinema or theatre who shows people where to sit. English = usher (male or female), usherette (female only).
2. Someone who is staying in your home or is at an occasion because you have invited them. English = guest.
As a Verb or Adjective:
1. To politely show someone where they should go often with a wave of the hand and letting them walk slightly in front of you. English = usher.
2. To politely indicate to someone with a wave of the hand that they should enter a building, room or doorway. English = usher in, invite in, admit into.
Interactive:
1. Used alone to politely indicate the direction in which someone should go. English = 'This way, please.'
2. Used alone to politely invite someone to enter into a building, room or doorway; or to indicate to a guest to go ahead and do something. English = 'Do come in!'; 'Be my guest!'