John, Yes it is anywhere within the 45 deg arc, but the height is fixed, ( copied fron the CPSA rules)
At a distance of 9.14m (10yd) from the trap, a regular target shall attain a height of 2.44m (2.66yd) to 3.05m (3.33yd). To ensure the correct elevation, a 2.44m (2.66yd) pole with a hoop 61cm (24in) diameter attached to the top must be used. Place the pole upright at 9.14m (10yd) in front of the trap. The trap should then be set to throw the target through the hoop centre. Care must be taken at all times to ensure that the correct measuring height is attained 9.14m (10yd) from the trap.
The pegs are in a semi circle 16 yards from the pivot point of the trap. so the angles change when you move pegs and as such the amount of leeead changes on each peg.
For example on peg 1 a 22 deg left will require an amount of leeead but a 22 deg right will be a straight going away shot. This will be vice versa for peg 5