All you have to do click the hyperlink (along the top of the gallery Grid) you want to view the galleries by and it sorts according to that hyperlink.
The page is at the bottom.

Review:

When you arrive at the user Gallery ...& if you want to view the galleries according to Ratings <> Click the word *Ratings* and
the albums(galleries) will be sorted by the albums with the highest rating.
Click *Date* and they will apear by when they were made.
Always remember the page of this sorting is at the bottom.