Universal communication is a digital cable leader across the United States. They have started using communication cloud for the B2B use case. One of their new requirements is One time charge (OTCs) that depend on multiple factors. Some of the factors are account related while other factors are product related. They already use matrix based pricing for their recurring price that depends on different sets of properties on product and account. What approach should consultant take to implement OTC within the existing matrix- based recurring pricing model?