You've come to the right place to get the answers you're looking for, @-AventadoR.

I assure you that creating a parent group and sub-customers doesn't have any repercussions. To create an individual statement for each customer, make sure to select "Bill this customer" when setting up the customer's info. With regards to receiving payment, you can definitely allocate this to your customer's invoice.

Additionally, this set-up would allow you to do a detailed tracking of your transactions. I'll show you how it looks like when running a report:

Running the Transaction List by Customer report will help you show all your customer's transactions in a specific period. Here's how:

1. Navigate to the Reports menu.
2. In the Find report by name field, type in "Transaction List by Customer," and press Enter.
3. Modify the reporting period and click Run Report.
4. You can also filter the list of customers you want to show in the report. Just click the Customize button.
5. Under the Filter section, click the Customer drop-down list and select the customers' names by clicking the checkbox beside it.
6. Click Run report.

You might want to check out our guide on managing customers for additional information. This page includes steps on how to delete, merge, and inactive customers. You can also use the Add/Edit Multiple List Entries feature. This is QuickBooks' way to add customer’s information in bulk. You can copy the details from Excel and paste them into QuickBooks.

Keep me posted if you have any other concerns about creating sub-customers in QuickBooks Online. I'm always here to help. Have a great day!