the Middle Track is where the A is going downtown and the Uptown is the A,C
Well not really.The track on the Far Right is Queens bound (E) as well as the 2nd track 2 the right is (E) Uptown since that is the terminal side.
The track to the far left is Brooklyn bound (A),(C) service.And the track 2nd to the left is uptown (A),(C) service.
So the right platforms are the (E) train terminal and the left platform is the (A),(C) side.