It is a scientific event that is meant to create synergy between researchers, students, and industrialists who can to meet and discuss hot topics on HCI with the IFIP TC13 representatives. The usual organization consists of a series of short presentations (~15 minutes) following by questions and an panel.
As the name suggests, the open symposium welcomes everyone interested in HCI topics. The event is free of charge, but registration is often required for logistics purposes. The presentations are made by invitation only. Are invited to make a presentation members of IFIP TC13 and researchers and industrialists of the local community where the event is organized.
The open symposium often precedes the organization of the IFIP Business meeting which is reserved for the countries representatives, expert members, observers and working group chairs of the IFIP TC13. The list of IFIP TC13 members can be found at http://ifip-tc13.org/membersofficers/