In reading through various verses regarding settling Jacob's family in Goshen, it is unclear if Joseph had the authority to do this on his own or assumed that Pharoah would be fine with it.
Breishit 45:10 - "You shall dwell in the land of Goshen..." - this seems to be a proposal, or perhaps a promise that Joseph tells his brothers to convey to his father.
Breishit 45:18 - Pharaoh says to bring the family to Egypt, and "I will give you the best of Egypt". Goshen, specifically, is not mentioned, here. Is it implied by saying "The best of Egypt?
Breishit 46:34 - Joseph instructs his family what to say to Pharoah. They should tell him that they are shepherds, so that they will be able to live in Goshen. This seems to imply that Joseph needed Pharaoh's approval.
Breishit 47:1 - Joseph comes to Pharaoh and says, "My father and brothers came here from Cana'an ... and they are (already) in the land of Goshen." It seems that he settled them, there prior to getting Pharaoh's approval.
Breishit 47:4 Joseph's brothers request that they dwell in Goshen. They are already there, because Joseph had settled them, there. It seems like they are asking permission after the fact. Besides, shouldn't Joseph have asked Pharaoh if it was OK, rather than having his brothers make the request? Doesn't he have far more influence than his brothers? When Joseph speaks to Pharaoh, he doesn't ask. He just tells him, they are already there.
Breishit 47:7 Pharaoh says (confirms) that the family should dwell in Goshen.