Hello again Mouselette!
It seems we're destined to cross paths today! You've got a great question about working with an accountant when you have QuickBooks Desktop. I'm happy to let you know how it works.
It's great you have an accountant that's also using QuickBooks. This is often the ideal situation because it means having someone who understands the program and has the accounting knowledge to help navigate your books. In this case, your accountant will also need to have a copy of QuickBooks Desktop in order to be able to assist with your file. Ideally, he would have the QuickBooks Desktop Accountant edition and not just regular QuickBooks Desktop. Like the Online Accountant version, the Desktop Accountant edition would give him access to extra tools that allow for specific changes to be made.
Your accountant is welcome to visit the website I linked in the last paragraph to learn more about QuickBooks Desktop Accountant Edition and give the sales team a call to discuss his options. He can get the number by clicking the Contact us option at the top of that page.
It sounds like you may have found this information already, but feel free to take a look at the following article to learn more about accountant's copies: Create an Accountant's Copy of your company file in QuickBooks Desktop
I'm also here for you if you have further questions. :)