YOU SAID:
he manages to manage the manager and make the manager manage
INTO JAPANESE
彼はマネージャーを管理し、マネージャーに管理させる
BACK INTO ENGLISH
He manages the manager and lets the manager manage
INTO JAPANESE
彼はマネージャーを管理し、マネージャーに管理させます
BACK INTO ENGLISH
He manages the manager and lets the manager manage
That didn't even make that much sense in English.