authorize.net plugin enhancement (capture auth's)

-- url of the page with the problem -- : mywebsite.com/mypage
-- HikaShop version -- : 2.3.1
-- Joomla version -- : 3.3.1
-- PHP version -- : 5.4.26
-- Browser(s) name and version -- : XXXXX x.x.x
-- Error-message(debug-mod must be tuned on) -- : Error_message

Hi,

The website I'm working on is a grocery delivery service. Owner takes orders online with an authorization (authorize.net - auth_only) and then captures after the order is shopped. We'd like to automate the capture.

Please PM me with questions and credentials.

Thank you!
Tina