what I say goes(Используется соответствующее местоимение. Наш директор ни с кем не считается, действует по принципу "Своя рука владыка". Our director does exactly as he pleases, acting on the principle "What I say goes." VLZ_58)
it's up to you(he (she, etc) permits himself to do whatever he likes. usedcriticizingly, ironically if a person permits himself to do harmful, criminal or foolish things)