Techniques for scheduling a conference among multiple persons include receiving quorum data and location data. Quorum data indicates a quorum for a particular conference. Location data indicates locations of a plurality of persons who satisfy the quorum. A proposed location for the particular conference is determined based on the location data and the quorum data. These techniques allow location data to include presence data that describes a current location of a person or a state of communication of that person; and therefore allow presence data to be used in determining where to conduct a conference and when. For example, an organizer of a meeting and meeting invitees are notified when the people constituting a quorum cross paths at the same location, or are situated at sites that support remote conferencing.