He is boss for years. I have no idea what is the role of Bagarella i mean i don't know how capable he is of leading , because he clearly has mental issues.

Buscetta on Bagarella: “I prefer not to speak about him; I think he doesn’t belong to human species; he probably had also mental and physical problems because when we played soccer in the prison’s courtyard he kicked the ball with two foots at the same time; have you ever seen a similar thing? In prison everybody feared him; I remember we stayed three months together in the prison’s infirmary and the only words he told me were good morning and good evening, nothing else”.