Locking/Unlocking a domain
From Bravenet Wiki
Setting your domain lock status can be done by following the below steps.
Locking your domain is an important security feature and we suggest you leave your domain in the "locked" status.
Unocking your domain is an necessary when transferring a domain to another registrar.
How to Get There
Login to your Bravenet account, navigate to the Domains tab, scroll down to where the domain name in question is visible, and look to the right, for the Lock/Unlock toggle.