I've successfully downloaded Poedit and renamed the .pot file Appointments-en_US.pot
At this point, I'm not sure exactly how to translate this file. There are hundreds of lines of text, many of which seem to be FAQ's, so I don't know which ones to modify. When I do find which one(s) I need to change, I'm not sure exactly where to put the correct verbiage.
Help has been great on this issue so far. I think this is pretty close to a solution.