Hi, I am setting up my expenses and I want to know if it is possible to change the Detail type to my own category?

Hi there, userlzelayt.

Let me share some information about how the Chart of Accounts works.

Adding your own category type is unavailable in QuickBooks Online. You can use the default ones in categorizing your accounts. Rest assured, these categories line up with your tax forms.

If you're not sure what category type to use, I'd recommend consulting your accountant to accuracy and avoid discrepancies in your books. Additionally, here are some articles that you can read to help keep your Chart of Accounts organized:
 

• Learn about the chart of accounts in QuickBooks
• Create subaccounts
• Use account numbers

Don't hesitate to keep in touch if there's anything else I can do for you. I'll be glad to help you anytime.