Manager Approval to Increase Budget Amount

Use case:

Site user trying to order an item for $100

Budget $50/mo

An email or alert goes to manager and/or admin requesting an increase to their budget amount

 - Approved means the manager or admin changes budget, alert is sent to site user and then the product saved in their cart can be ordered

OR

Order declined, alert/email is sent and the site user either pays with a credit card or doesn’t place order