I have just purchased a Vector Optics Pro Max 6-24 x 50. Out of the box the elevation turret cap is pulled up and won't go down. Do I have to adjust anything (unscrew anything) so the turret cap will push down
No that is correct, it's a zero stop turret not a tactical turret
Here is a video to show you how to use it: https://youtube.com/shorts/mn0qHrgRm-M?si=9bWcOPagku9q09mC