Daniel,
From what I am reading you have in the SmartConsole just 2 gateways, not a cluster object with 2 members, is that correct?
If so you need to go to
the Gateways and Servers view top left
click on the little star in the bar top middle
Now select Cluster and then select Wizard
Enter the Name of the cluster you want and the main Cluster IP and click Next
now you see a window for adding the members, as you already have them, just select the Add button:
And choose add existing member.
Do this again for the other member and finish the wizard.
Now open the newly created cluster object and check the Network configuration and add the cluster addresses for the interfaces you want to have a Virtual IP.
When all done push the policy and check on the members with cphaprob stat what the status is after the policy was installed.
Regards, Maarten