Here’s more information on what options are currently offered: https://docs.mattermost.com/help/settings/account-settings.html#sidebar.
Note that the settings must first be enabled by a System Admin.
30 votesAnonymous commented
from an it-security perspective this is a must-have feature.
Here’s more details about what is available today: https://docs.mattermost.com/deployment/video-and-audio-calling.html.