I was always jealous of the Mac people for being able to print two of the same page side by side. I'm a paper saver and love to print two per page. I was having to print one half size, remember how to reload the paper back into the printer correctly, then print the same sheet again.
By accident I discovered how to print two of the SAME page on one sheet of paper on a PC.
I hope that is big enough to see and understand.
First type in which page you want side by side, but use a comma and not a dash. (Yellow)
Then choose multiple. (Red)
Next choose 2 per page [or whatever number per page you want, just make sure to keep putting a comma then the page number.] (Blue)
Make sure it looks as expected. (Purple)
Then click print.
This has saved trees, forests, ink and my sanity!