I have a distribution provisioning profile with 1 device already. Now there are a couple more devices want to be added to this project.
How do I do to add them in wi
If you need to find out your UDID then visit here: http://whatsmyudid.com/
If you already know your UDID then go to the Devices section of your iOS Provisioning Portal and click "Add Devices":

Enter in your Device Name and UDID (it's best to copy and paste) and hit Submit:

Enjoy :)