To be clear, here are the steps:
1. Request a Login at activate.arubanetworks.com (you will need the serialnumber and the mac address of the AP
2. Add your IAPs to activate using the Cloud Activation Key http://community.arubanetworks.com/t5/Controller-less-WLANs/Where-we-can-find-Cloud-Activation-Key-on-IAP/ta-p/203205
3. Create a rule in Activate to Convert IAPs to Campus APS or RAPs
4. Move your APs into that Folder
5. When IAPs boot up, they check into activate to see if there is a rule applied. If there is no rule, it just boots up as an IAP and broadcasts the Instant SSID.
If your company orders more Aruba Products they should automatically get added to Aruba Activate where you can move them into different folders depending on what you want them to do..