Scale sheet creation

Hello! I am trying to make scale sheets for my students, with separate scales, double bars, and key signatures on each line. Is there a way to change key signatures between lines without showing the change at the end of the previous line? For example, if the first line is an F Major scale and the second is a C Major scale, it is displaying a B natural sign at the end of the first line. Is there a way to remove this or a better way to make a scale sheet? Thanks so much!