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Make sure you are logged in to the platform UI and click on ‘manage advertisers’ in the advertiser section of the main navigation. Find the advertiser for which you want to create an attribution group and click on the icon in the technical section of the corresponding row. If you do so, you will be taken to the attribution manager page.
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On the attribution manager page, you will find two main tabs. By default, the tab called ‘single attribution’ is loaded. The other tab is called ‘attribution group’. Proceed to click on it.
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Editing your attribution group
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To remove elements from your attribution group, just click on the icon in the column on the right. Confirm your action in the pop-over window and element will disappear. You can add elements again using the method described above.