Solution: He hires someone to do it.
Easy peasy lemon squeezy.
So he hires someone to act as the "Special Prosecutor" (which actually hasn't existed four more than four decades, but let's ignore that for now), who will make all the important decisions like who to charge, how to staff each investigation, how to conduct each investigation, make all the close legal calls and strategic decisions....
And Gaetz just gets the title?
Law is a very technical profession. If you lack the requisite technical knowledge and experience, it is impossible to properly supervise those who do.