The Magellan Baade and Clay 6.5-m telescopes are scheduled by Dr. Ian Thompson of Carnegie in consultation with someone from each member institution (in our case, Edward Olszewski, who receives rankings from the UAO TAC). The schedule is found at the Las Campanas Observatories page (new link) http://www.lco.cl/?page_id=4349 [1]. You can get to this link by going to www.lco.cl [2], then to Astronomers-->Telescope Schedule.
This new site shows only the two Magellan telescopes. You can add other telescopes by using the "options' button on the calendar.
Links
[1] http://www.lco.cl/?page_id=4349
[2] http://www.lco.cl