Calling a person in a room

In the writing area of a message:
  • Option 1: Type “@” 
      - The names of the participants of the room appear above the editing area.
      - If the participant you are looking for is not displayed, type the first letters of his name after the "@" until it is displayed.
      - Click on the displayed name

  • Option 2 (from your computer):
    - Type the first letters of the person you want to call and press the "tab" key on the keyboard.
    - Type the rest of the message and send it normally