Hi Frank,

Hit Shift + F, the click the mouse where you want the apostrophe. A free text box will appear. Now select the button farthest to the left on the lower tool bar. Default is All Symbols; it's there on the second, I believe, line. Or it is also in the Articulations menu (the drop down list). Just click it, and it will appear in the free text box. You can now move it, enlarge or reduce it, copy/paste it.

all best,
mgj