During Sue Hawkin's coaching workshop last year, she explained how she splits the court, both longways and sideways.

Width wise she has 3 channels and the ball should only be passed to the next one, ie from A to B; from B to C; from C to B; from B to A, BUT not from A to C or C to A.

Each third is split into 2 zones and the ball should either be thrown to the next zone or to the one after the next one. Throwing the ball further could lead to it being intercepted.

Try this and see if it helps your players keep hold of the ball and also whether the number of interceptions is reduced.