Authorize.net transaction types
I am in the process of my first Drupal Commerce build. Things are going well so far. I have created all my products and product display nodes. I am now in the process of setting up the checkout workflow. My client uses Authorize.net for processing. I have installed the Commerce Authorize.net module. However, the client is requesting the transaction type to be "Capture Only". They were very specific in this request. I do not see this option under "Default credit card transaction type" in the "Payment Settings" section for the payment method. Do I need to write a new Payment Method module (which I've never done)? Or is there a means to enable this card transaction type within the Authorize.net?
Any advice at all on this subject would be greatly appreciated.