Hello, @SGI.

You may record an estimate to send your stocks so it won't record any sales. However, you still need to track the movement manually since the system doesn't have the fulfilment option or don't track the items from sending them to the store then to the buyers. Currently, tracking stock movements for items directly in QuickBooks Online (QBO) is unavailable.

Or, you can look for a third-party application from our app store. Here's the link: https://quickbooks.intuit.com/app/apps/home/.

In case you need additional references about managing stocks in QBO, check out the topics from this link.

I'm always here to help if you have any other questions. Just add a comment below. Have a great day ahead!