It seems like a good idea, but it doesn't work for me.
I teach a few classes more than once a day, and couldn't put it in my plan book that way. I contacted the help desk and they got back to me rather quickly, but said it's not a feature they have or plan on having. Oh well.
How I Use It
Develop your plan book electronically. Seems like a good idea, right? Well, it's not that simple. Lots of work to set it up, and lots of work to maintain. I tried, but I can't use it.