To enter a House charge for a customer they must have a credit limit that is greater than their open balance and they cannot be on Credit Hold.
During transaction entry, select the customer, add the items to the transaction click SAVE and then use House Charge tender type.
A House Charge increases the balance on the customer's account.
All or part of a transaction can become a House Charge, up to the customer's available credit
Receive on Account removes a balance (or part thereof) from a customer's account.
To review available credit see >Customers > General Tab
You can also review customer balance during Customer Inquiry