Hello there, answers3.
In QuickBooks Self-Employed, there's only one category for income. You can categorize this under Business Income. Here's how:
- Go to the Transaction menu and select Add Transaction.
- Enter the amount and a brief description.
- Browse the Select a category menu and choose the best option to organize your transaction.
- Then, Save.
If this is a deposited transaction, you can automatically select Income once you click the Business option. Here's the sample screenshot:

I've got an article about categorizing transactions in QBSE: Schedule C And Expense Categories.
You can always go back here and add another post below if you have other questions. Take care always.