I am guessing it is like our Wayfarer World. In which case there will be a hook cut out of the board and a metal plate screwed over the cut out.
This is how we used to do it;
Boat off the trolley onto some nice soft grass and lift onto it’s side – with the mast up.
Secure the jib or spinnaker halyard to the ground to keep the boat in position.
Lower the centreboard.
Remove plate and lift board off the pivot pivot pin.
hope that helps.