Your system administrator can include you as a member of a group along with other users. Each group has its own extension number which can be used as the destination for a call.

When a call is made to a group, it is presented to the available group members, either one at a time or all at the same time, until answered by one of the members.

How long a group call will ring at each group member before being presented to the next member is controlled by the group's own settings. Hunt groups also use voicemail and have their own settings for when an unanswered call should go to the group's mailbox. For group calls, the hunt group's voicemail settings are used rather than your settings.