For both PST Flight Deck and Archive Shuttle, a user can be giving a ‘customized administrator’ role, containing:
This is shown in the screenshot below:
With those options enabled, the required permissions will be available. When entering this user information into the appropriate Credentials Editor ( in the Archive Shuttle or PST Flight Deck) the checkbox should be enabled next to Global Administrator.
Note: The global administrator account needs to be able to authenticate using basic authentication.