how to print different size photos on photo paper

If you want to print several photos on one large piece of photo paper, like 3.5 x 5, 4 x 6 and a 5 x7, you'll need to do that outside of Photos.

An easy solution is to use Pages.

1. Setup a page representing the size of the photo paper you have.
2. Crop the images to the size ratio that you want each to have. They will come in much larger due to the ppl of the screen and image so need to be resized on the canvas to the size you want
3. Export the edited versions to a folder on the Desktop.
4. Open the canvas in Pages.
5. Drag the photos onto the canvas, resize to the size you want for each, position on the canvas
6. Print.

Hello Michael Houser1,

Thanks for asking the Apple Support Communities for help with printing Photos.

Yes, the Photos app can do what you seek. Please check this help article which states: Print your own photos in Photos on Mac - Apple Support

"You can print photos in several standard sizes, or select a custom size. You can also print more than one photo per page using a contact sheet print format. You can print photos in black and white or in color, depending on your printer’s capabilities."

Cheers.