Thanks for joining the thread, @Shorebrook.

Let me help you with vendor check concerns in QuickBooks Desktop (QBDT). 

Currently, the program doesn't have the option to create a check template. If you're referring to the Check window, you can add a check number field by unchecking the Print Later box. Simply open your check again and perform these steps to accomplish your task in QuickBooks.
 

Please see the screenshots below for your reference:

To learn more about writing, deleting, voiding, and printing checks, please check out this article: Create, modify, and print checks.

That should do it! Please let me know if this works for you or if you're referring to something else, @Shorebrook. I want to make sure that you're able complete your task in QuickBooks Desktop. Have a great day.