Looking for help understanding the role of male priests in the worship of Isis, particularly in her dark/veiled aspect (x-post /r/kemetic)

From my life story:

Lucius wakes up in a panic during the first watch of the night. Considering Fate to be done tormenting him, he takes the opportunity to purify himself by seven consecutive immersions in the sea. He then offers a prayer to the Queen of Heaven, for his return to human form, citing all the various names the goddess is known by to people everywhere (Venus, Ceres, Paphos, Proserpine, etc.). The Queen of Heaven appears in a vision to him and explains to him how he can be returned to human form by eating the crown of roses that will be held by one of her priests during a religious procession the following day. In return for his redemption, Lucius is expected to be initiated through the Navigium Isidis into Isis’ priesthood (Isis being the Queen of Heaven’s true name, according to her). Lucius follows her instructions and is returned to human form and, at length, initiated into her priesthood. Lucius is then sent to his ancestral home, Rome, where he continues to worship Isis, under the local name, Campensis. After a time, he is visited once more by the goddess who speaks again of mysteries and holy rites which Lucius comes to understand as a command to be initiated into the cult of Isis. He does so. Shortly afterwards, he receives a third vision. Though he is confused, the god appears to him and reassures him that he is much blessed and that he is to become once more initiated that he might supplicate in Rome as well. The story concludes with the goddess, Isis, appearing to Lucius and declaring that Lucius shall rise to a prominent position in the legal profession and that he shall be appointed to the College of Pastophori that he might serve Osiris and Isis’ mysteries. Lucius is so happy that he goes about freely exposing his bald head.

So, supplicate in Rome. Then rise to a prominent position in a legal profession, and serve Osiris and Isis' mysteries. I'm failing miserably at all these, by the way, so don't feel discouraged.

/r/occult Thread