Larry
I'm no technical illustrator but perhaps the attached drawing will make things a little clearer. The drawing show the arrangement for the mainsail. The bowsie is used to adjust the length of the sheet and thus the travel of the sail. For a jib, the sheet is attached at the end nearest the mast. Both main and jib can be controlled from the same servo. It will take a little experimenting to get the right sheet lenghts for each sail.
HTH
Doug