How to FaceTime and iMessage on multiple apple devices with one iTunes account

Question

We recently received iPad 2's for Christmas and was looking for some advice on how to FaceTime and iMessage on multiple apple devices with One iTunes Account (Apple Id).  I have created or attached other e-mail addresses to our apple id but do not know how to use them on the new devices.  Our home MacBook Pro uses our main apple id for FaceTime.  The iPads have been setup with the main apple id w/o being able to use FaceTime and iMessage.
Please Help...
I appreciate the help and support.

Answer 1

P and V-
If you are trying to connect to someone with a different Apple ID, I think all the devices should work, but one at a time.
The problem is when you try to connect between two with the same Apple ID.  Once the calling device tries to make the connection, it finds the second device to be "busy".  That is where each needs to use a different E-Mail address when setting it up.
On iOS devices, when you press the Home button to exit an App, the App may still be active in the background, even when the device is sleeping.  If FaceTime or iMessage is merely being active that way, it may be enough to "tie up" the E-Mail address.
From the Home screen, double click your Home button.  You will see a list of recent Apps along the bottom of the screen.  Press and hold on one of them until they start to wiggle.  You will then see a red minus sign on each.  Pressing the minus sign will remove an App from the list, and stop it from working in the background.  (Click the Home button to stop the wiggling, and again to hide the recent Apps.)
Fred