Hello there, kimpellrichardso. I'll help you how to track this transaction within QuickBooks Online.
You can add separate two customer profiles using these steps:
Go to Sales and select Customers.
Select New customer.
In the Customer display name field, enter the display name for your customer (this is a required field).
Then, review each section and enter any other important customer info.
Select Save.
Next, when receiving a cash payment, create a Sales Receipt. In the Deposit To field, choose the Undeposited Funds account. It will record the cash payment before it is deposited into the bank.
Here's how:
Go to + New, then select Sales Receipt.
From the Customer ▼ dropdown, select a customer.
Choose the Undeposited Funds account from the Deposit To section.
From the Select a product/service ▼ or create a new one.
(Optional) You can edit your line item’s quantity or rate in the Qty and Rate field.
Fill out the other necessary fields in the sales receipt, then select Save.