There are a few different ways that you can select multiple files to print. One way is to hold down the Ctrl key on your keyboard and then click on each file that you want to print. Another way is to click on the first file, hold down the Shift key, and then click on the last file. This will automatically select all of the files in between. You can also use a combination of the Ctrl and Shift keys to select multiple individual files or groups of files.