You can select from organizations defined in the BCC and specify to use those organizations as Owning Groups and Internal Audiences for solutions.
To Add an Organizational List:
Opening the BCC > Service Admin > Service Center > Global Service Center Settings > Organizational Lists page.
Click Add Organizational List.
Select the Organizational Lists to add, and click Save. When you add an organization to the list, by default, it is enabled as a Solution Owning Group and as a Solution Internal Audience.
Modify the Solution Owning Group Settings by clicking the Edit icon.
Enable or disable the Solution Owning Group Solution field that supports routing and modifying security within ATG Knowledge. By selecting Enable, the organization is to be used as a Solution Owning Group.
Enable of disable the Solution Internal Audience Solution field that supports viewing security within ATG Knowledge. By selecting Enable, the organization will be available as a Solution Internal Audience.