A method comprises displaying an image of an environment on a graphical user interface, the environment including personnel elements visible in the image, detecting a gaze of a user directed at an image of a first personnel element corresponding to a first information conveyor of a plurality of information conveyors, changing a state of the first information conveyor corresponding to the first personnel element from a passive state to a listening state in response to detecting that the gaze is directed at the image of the first personnel element, wherein the first information conveyor includes a first audio output device, receiving audio information through an audio input device, and when the state of the first information conveyor is changed to the listening state, controlling an output operation, wherein the output operation includes directing the received audio information as an audio output through the first audio output device.