The green arrow is intended to indicate the attitude of the aircraft - the Artificial Horizon (middle instrument)
<- indicates a level turn to the left. The AH will show the line between the brown and blue tilted to the right.
Various combinations of climbing, level and descending turns can be shown by pointing the arrow left, right, up, down and to the four corners of the box. This is independent to the direction of travel shown for the aeroplane as indicated by the plan-form T.
All of this information including the RBI information is explained quite clearly at the beginning of the test.
As mj says, if you're struggling to understand what the instructions are telling you, that should be telling you something.