If the Print later box is checked, the check will show in the Print Checks page waiting to be printed. Otherwise, the check won't be there.
Here's a sample check:
When you are about to print the check, these are the steps:
In a situation where you need to align a check, here's an article for the detailed steps: Align how your checks print.
Check out this link and select QuickBooks Online for some articles about managing vendor transactions. Please check them out.
We are always here to help if you have questions about printing checks or anything else. Have a great day!