Although it may not feel natural at first, you want to speak to the camera, not the screen.
Always position your camera at eye-level, not above or below you. "You don't want the camera looking up your nose, and you don't want the camera looking down at you.
The purpose of this time limit is to ensure that registration is available to as many people as possible.
Avoid windows and walls full of pictures, posters, or knickknacks.
Clear all books and clutter off your desk — basically, you want to eliminate anything that could draw the interviewer's attention away from you.
Roll20 utilizes an in-house built-in Web RTC video and voice chat feature that allows you to communicate with other players.
Once at least two people log into a game using any Broadcast options beyond None, you should see a dialog box along the top of your screen that asks you to give permission for Roll20 to use your camera/microphone.