Thanks for joining in this thread, jftellier.

I know how important it is to have control over your inventory items by setting up a default income account. While this option is currently unavailable in QuickBooks Online, as a workaround, you'll need to assign the account manually.

Also, instead of scrolling down looking for the correct income register, I'd suggest typing in the specific account name. This way, the system will show all the accounts that match your description.

I'll take note of this and add it to our list of proposals. We are working on big improvements that will be helpful for the majority of our customers, and you’ll see those rolling out soon through our QuickBooks Blog.

Additionally, you can go through this article: Adding Products and Services, Customers, and Vendors to Lists. It contains more information on how your products and services work in QuickBooks Online as well as tips in tracking your best seller.

You're always welcome to post any concerns you have in this space. I'll be here if you need assistance with QuickBooks or have follow-up questions about products and services. Have a great day!