Audience sharing allows you to leverage audience data across different ad accounts for targeting in campaigns. You can share a Custom Audience (created from Engagement, App Activity, Website Traffic, Customer File, or Partner Audiences) or a Lookalike Audience to specified ad accounts within the same TikTok Business Center.
Note: If you can't share audiences between accounts outside of a single Business Center, this feature may not be available to you yet.
To share audiences in TikTok Ads Manager:
Click on Tools.
Click on Audience Manager.
Select the audience name and click on the 3-dot icon.
Click Share.
Enter the ad account ID of the recipient you want to share the audience with.
Click Confirm.