The Connexion configuration wizard now includes settings for connecting to the Gateway (to enable an Integrator deployment). Before you install/reconfigure Connexion, you should have installed your Gateway(s).
Install Connexion (or run the configuration wizard if already installed) and run through the configuration wizard until you reach the 'Services Options' page:
On this page you need to turn on the Gateway connection (check 'Connect to Integrator Gateway') and then enter the endpoint for one or two Gateways. The endpoint is the machine name of the Gateway host coupled with the "Internal Port" you specified in the Gateway configuration wizard. If you have deployed multiple Gateways and you have entered 'Alternate' information in the above page, a failure of one of the Gateways will not interrupt message flow between Connexion and remote integrators.
This is the only configuration needed to enable Connexion within the integrator deployment.