In the picture below, I am printing out one of the ClassLink Quickcards that our K-4 students use. Since it gets heavy use, I print it out on card stock. Note the settings I used. I am printing here from Preview app.
When you load your paper in this side tray, an alert will pop up on the printer. When printing with heavy paper, be sure to change the paper type to Heavy 1 paper. Otherwise your printer be jammin' like Bob Marley.
Please consider where digital tools can replace or improve teaching and learning. Send me a note if you would like to learn more. Let's save a little of that paper.