This is possible. Here are the steps:
First of all, create your pocket calendar or open an existing project. Once you're done with editing it, click the Print button. The new window with the print settings will open.
For instance, we need to print 8 pocket calendars on a single A4 sheet with landscape orientation. Find the Copies field and type in the number you need. If you are satisfied with the result, hit Print to get your calendars.