There are a couple of steps on how to record meals and incidental expenses in QuickBooks Online (QBO). The easiest one is to create/record an expense transaction. Let me share these steps with you:
Select + New, then select Expense.
In the Payee field, choose the vendor.
Select the account that you used to pay for the expense in the Payment Account field.
Enter the date of the expense in the Payment Date field.
Specify the method of payment in the Payment Method field.
Provide details about the expense in the Category Details area. Choose the expense account you use to track expense transactions from the Category drop-down menu, as well as a description.
Additionally, if you haven't set up an account yet, you can add one by clicking the Category drop-down and selecting + Add new account. However, if you're unsure what account to add, it's recommended that you contact an accountant to help create one.