How do I edit a shared Weight & Balance profile?

Enhanced Weight & Balance profiles are associated with aircraft profiles. 

Shared aircraft profiles are read-only by default. To edit a shared aircraft, or its Weight & Balance profile, a copy of the aircraft profile must be created. Once a copy of the aircraft profile has been created, the Weight & Balance profile can be edited. 

To copy a shared aircraft profile, select More > Aircraft > Shared Aircraft Profile > Copy Aircraft (bottom of the aircraft profile).