park it?

I really wish there were an option "to park" the magnifier and not always follow the mouse? I want to use this with itunes while teaching and showung videos to my class. And I want my students, who are learning English as a second language, to be bale to see where where exactly in the movie we are for any given fram so they can write down the time when they have a question. Also it is not clear to me how to change the shape from a circle to a rectangle?

esl_coach about Zoom It