Your character is a snarky average looking schlub but he is rich. Pick his job.
>Film production executive
>TV studio executive
>Record label executive
Your character has a ditzy eye-candy gf. Pick her job.
>Singer
>Actress
>Club dancer
>Yoga instructor
>Main character's assistant
Your character has superhot ex-wife. Pick her personality.
>Ball-busting shrew
>Desperate simp to remarry main character
>Airheaded slut having a new boyfriend every week
>Cool girl that helps out when main character in trouble
Your character has a teenage child. Pick their personality.
>Lazy burnout
>Insufferable artist
>Party animals
Main character lives in a mansion. Pick the neighbourhood.
>Beverly Hills
>Malibu
>Bel Air
>Santa Monica

Once you pick your choices, enjoy writing the sitcom.