Once your campaign is live, you can edit many components of the campaign without interrupting the campaign's delivery.
Once you have logged into the ads platform, navigate to the Campaigns list by clicking "My Campaigns" in the left sidebar navigation menu.
Next, locate the running campaign that you'd like to edit. You can begin the editing process by clicking the kebab menu to the right of the campaign, then choosing "Edit Campaign" from the dropdown menu.
Please note: if a campaign is in draft mode, you can also edit it using this same process, however you will be able to access the entire campaign set up to edit it as you initially created it. The following pertains to editing Running campaigns.
Once you click "Edit Campaign," you will have the option to edit several aspects of your campaign.
To edit your audience, select "Edit Audience Targeting" from the pop-up menu. You will be directed to an editing screen. Here, you will see your current audience targeting, and you will have the ability to add or remove audience targeting.
Once you have updated your audience, click "Update Campaign."
A successfully edited campaign will receive a pop-up message letting you know your campaign has been updated with your changes. These changes will take effect immediately, but may take up to 24 hours to appear in your dashboard and on your reports.