Italian videoactivism in the 70s

I would like to contribute at the Saturday's working group "Konzepte des Kinos", by introducing 3 Italian videoactivism experiencies of the 70s:
that of the group "Videobase" (Rome);
that of Alberto Grifi (Rome);
that of the group "Laboratorio di comunicazione militante" (Milan).

Unfortunately, I cannot participate to the other Summit days, because I'm working and even on Saturday I must leave the working group at 12.00: is it possible for me to directly participate on Saturday morning only for 1 hour, and then to remotely participate and get by mail the other contributions to that issue ?