Adding funds to the order amount for Credit Card Authorization
Needing a means to add (hidden) additional funds to the order for adjustments to the order. ie Merchandise amount $100 and shipping charges are $10. I would like the ability to add an amount to this to cover higher shipping charges. Instead of the authorization being $110, I would like the authorization to be $125. That way if the shipping charges need to be increased then I know that the funds are there to cover it. This technique is similar to what restaurants and gas stations use when you initially get credit card approval.
Hopfully that this link will describe what I am after https://localwiki.org/davis/Authorization_hold