A multiple access presence agent that collects and stores presence information on a presentity from presence contributors is configured to define access rules for each of the presence contributors, in which the access rules define respective rights and privileges of the presence contributors to the presence information of the presentity. The multiple access presence agent is further capable of authenticating one of the presence contributors to determine the access rules associated with that presence contributor, and in response to a valid authentication, enabling access to the presence information of the presentity by that presence contributor based on the access rules associated with that presence contributor.