What setting within TikTok Business Center dictates the availability of shared audiences across different ad accounts?

The 'Audience Sharing' setting within the TikTok Business Center dictates the availability of shared audiences across different ad accounts. This setting allows you to control which ad accounts have access to custom and lookalike audiences created within the Business Center. To enable audience sharing, you must navigate to the 'Audiences' section within the Business Center, select the specific audience you wish to share, and then choose the ad accounts to which you want to grant access. Without enabling 'Audience Sharing' for a particular audience and assigning it to specific ad accounts, that audience will only be accessible to the ad account under which it was originally created. This centralized control over audience access ensures data privacy and allows for efficient audience management across multiple ad accounts within the Business Center.