WP Multisite - Marketpress - Chained Payments

Hello,

Is the Chained Payments gateway still available in the most current version of Marketpress? I have a WP Multisite setup and am attempting to setup a shop where vendors can sell their products on each of their sub-sites and have a small percentage fee taken from the transaction and sent to us.

I was advised that the best way to set this up would be using the Chained Payments gateway, but I didn't immediately find this option in the Network Admin Marketpress settings.

Thanks much for your assistance and Happy New Year!