I'd be glad to help provide some insights about itemizing your scanned receipt.
Currently, we don't have a direct option to itemized the scanned receipts. What you can do is itemized this manually by editing the transaction.
For additional references you might want to check, you can click the following link articles.
Manage your receipts in the Receipts tab
Email your receipts to QuickBooks Online
That should do it. If you have other questions about your scanned receipts, please let me know. I'll be here to help however I can.