Create ipa

https://developer.apple.com/library/content/documentation/IDEs/Conceptual/AppDistributionGuide/DistributingEnterpriseProgramApps/DistributingEnterpriseProgramApps.html
[Exporting your app in house]

 - Create an archive: Product > Archive.
- Create an ipa: 

1. In the Archives organizer, select the archive.

Wireless Option
http://help.apple.com/deployment/ios/#/apda0e3426d7

https://bitbar.com/how-to-create-ipa-and-xctest-package-for-ios-testing


Additional Ref:
https://forums.developer.apple.com/thread/28666