2 Questions About Plugins

My first question is about the Appointment+ plugin. On the visitor side of the site, in the appointment setting box there is a line that shows the duration of the appointment. Is there a way to eliminate this line? Most medical offices may note want the duration to be seen.

My second question is about the Theme Switcher plugin. Is there a way to set it up so that it could also select different css design files for the same theme?

Thanks,
Leo Wiles