Welcome to Community, @BillM.
I'll share some information about categorizing arts. You'll use the expense account for the indirect costs of your business. While you'll use the COGS account for direct expenses related to what you sell (raw materials). If you have doubts about the accounts to use, I recommend consulting your accountant.
If you don't have an account, check out this site: Find a ProAdvisor.
In the meantime, here's how to create an account in QuickBooks Online.
- Go to Accounting.
- Choose Chart of Accounts.
- Select New.
- In the Account window, enter the account info.
- Click Save and Close.

I've also added these handy articles below for additional reference. It has details on how to handle COGS account.
Please click the Reply button below if you still have questions or concerns with expense accounts. I'll be around for you. Have a great day ahead.