Hi Geoff,
Thanks for reaching out!
There is not currently any way out-of-the-box to add a print button like this, but you could try adding some CSS to make the month view more printer-friendly and then use a third-party plugin to offer a print option on the page.
We are not able to do customizations, but we do have a list of recommended developers that you could contact if you would like to get help with the code.
If this is a feature that you would like to see added in the future, please do let us know over in our Feature Ideas Forum! This is what we use to gauge user interest in new features and help guide future development efforts.
Let me know if you have any other questions!
Thanks,
Jennifer