Is there somebody in charge of this group? I heard that a guy named Heber Jentzsch was the President.
Originally, of course, L. Ron Hubbard was in charge. There is a long convoluted story about how he wasn't supposed to be running the church, but he pretty much ran things until just before he died.
Officially, there are multiple levels of organization, with multiple groups of people "in charge" of the church. There was the "Watch Dog Committee", and "Exec Strata", and "CMO Int" and "RTC" (I'll have to post a glossary now), and there was even a "President of the Church of Scientology" (a figurehead position of no power) who was Heber Jentzsch . Supposedly, all these organizations and groups were supposed to watch each other and the church and keep things running well.
However, none of these organizations or groups of individuals have any power any more. In the 1980s, while Hubbard was in hiding, and then died, one person, David Miscavige, took control of the church in a coup d'etat, that eventually gutted all of the upper organizations and groups and left him in sole control.
The staff who were originally in positions of management have all been removed, most are locked up in a pseudo-prison in the church's compound in Hemet, California. Heber Jentzsch is locked up there. Some executives were kicked out or escaped, and many have told their stories.
Oddly enough, although Miscavige has been solely in charge and has been directing things for more than 20 years, he continues to blame all the church's troubles and failures on others. As he gets more desperate, the actions he takes get more grandiose, expensive and ... strange. Except for the poor souls who still believe in him, it could be an entertaining show as the church goes down.