Cards are configured just as users are. So to add a card you should add a user into the user group.
Let's for example add card 00001.
Go to "calling_cards" user group editing mode. You'll see this:
Now press link "Users". You'll see a list of users in the group. We haven't added any of them, so ours is empty. Press "Add" to add new user. You'll see:
Produce same steps to configure any additional cards.
That's it! Now we can check hunting to see if we did correct setup and calls will go through the system.