Printable ResScan Graphs - > 1 day at a time?

I can Review graphs showing more than one day, but I cannot figure out how to create a printable graph (the far right button on the patient overview page) of more than one day at a time. So far, I have only two nights of full data. When I Graph data, I am given the option to Graph only the most recent night. Can I create a printable graph showing both nights? How?

Okay, I see that the additional days show up in the Summary Graphs automatically as I download new data each day. That is fine.

and I also see that in order to include statistics for more than one day at a time with the detailed graphs printed, I need to select the date range when I Review statistics, and that range is used for the statistics when I create the detailed graphs.

an easy way is to hilite the days you want at the left and the date range will automatically be selected.

I have been unable to highlight more than one date at a time in the panel on the left. The normal key combinations, with the Shift and Ctrl keys, do not work for me.