When you bulk edit campaign audiences, you can set new audience targeting rules for more than one campaign in a group. Your new rules replace any existing rules within the campaigns.
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In the group's Campaigns view, select the campaigns that you want to edit.
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Click Bulk Edit and select Audience from the dropdown menu.
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Target or Exclude audiences from First Party Audiences, Third Party Audiences, or My Sets. For more control over targeting rules and timelines, select Advanced Retargeting Strategies.
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Click Save to set the new rules for your campaigns.