I am working on a project where I need what I print out to be 4x5 (approximately) so I set it up that way when I first opened the new doc. And when I print it out, it does print out the right size, however I need to print many of them and I don't want to waste the rest of the sheet of cardstock paper - is there any way to print more than one copy of it repeating across the page so I don't waste as much paper? I've tried lots of settings and none seem to work. I've even tried exporting as a pdf to see if the option was accessible in acrobat but I haven't seen anything.
Take the PDF, and place it back onto an InDesign page of the correct paper size as many times as you need.