Open all the photos you want to print simultaneously in Preview. Make sure all the images you want to print are selected in the side panel.
Go to File -> Print Selected Images
Now you are in the print dialogue. First, make sure you see the extended version. If your dialogue is only 2 or 3 lines long, click on the black triangle next to the printer name.
About half way down, you should see a drop down menu... mine says "Preview". Change that to Layout (see Screen Grab). Pick how many photos per page you want to print. Print. You're done.
ps You still don't get a lot of choice over size and placement, but this is fast. You get to choose how many per page. More = smaller. For more exact control, set up some templates in Pages, the page layout side. Create some templates with the sizes you want for each photos as a graphics box. Save As Template is what you are looking for. Failing that, then you are probably looking at Aperture or Lightroom. Though, I wouldn't be surprised if there aren't some SW packages for creating picture packages. You might have to search for those. Use the term Picture Package to start with, until you get a better sense of what kind of terminology is being used for what you are looking for. Good Luck.