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