Your users are not able to publish apps by themselves, but they may create bublication requests. To create a publication request user need to push “Publish” button and fill up the information.
Then they need to choose the store and click “Continue”.
You will get requests via email and via Administrator panel. Go to “Apps” “Build requests” wp-admin/buildRequests.php
And you will see all active publishing request on your reseller site. To start publishing press “Go to publishing” and follow the instructions from:
For iOS: http://support.ibuildapp.com/forums/23077293-iOS-apps-managment
You may Also enter your client’s account by clicking his nickname in “Projects” section:
This way you may publish apps, send pushes, edit applications and there is no need to know login and pass of your client’s account.