Who is the outgoing managers in Phantom of the Opera?

In "The Phantom of the Opera," the outgoing managers are Monsieur André and Monsieur Firmin. They take over the management of the Paris Opera House but soon find themselves at odds with the mysterious Phantom, who demands their attention and loyalty. Their tenure is marked by chaos and fear as they try to appease the Phantom while managing the opera's productions. Their inability to control the situation ultimately leads to their departure.