No, at this moment you can setup only one income account.
So if you are planning to categorize the income based on the Shopify product categories or so then you may have to manually update the income account once we created the item in your QuickBooks. Don't worry, we won't overwrite it because the income account you configure in Pipemonk settings dashboard is only used for the product creation.
For instance, say you have selected 'Sales' as the income account in Pipemonk dashboard for your products. Now there is a 'Product A' in Shopify and it need to be created in QuickBooks so you logged into Pipemonk and run the sync. Post that we will create a 'Product A' in QuickBooks by setting up its income account as 'Sales'. But you can now update the income account from 'Sales' to an account called 'Product A income' (or any other desired account of yours) in QuickBooks and it will stay same till you change it manually again.
Yes, this way your income is categorized once the account is changed after the product is created by Pipemonk.