Glad to see you here, @NaomiC. I can share with you how to edit category expenses.

You seem not to see the Chart of Accounts in QuickBooks Self-Employed because this is currently unavailable. Also, you can change the category of the transactions, but we're unable to edit or rename them.

For more insights, you can also refer to this article: Categorise transactions in QuickBooks Self-Employed.

Additionally, let me attach this link to help you learn the basics of QuickBooks Self-Employed: QBSE Overview. It covers some insights on how to enter business transactions into your account.

Fill me in if you have other questions about the managing expenses category in QuickBooks. I'll be happy to help you again. Keep safe and take care.