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Hi Michele! Campaigns can track sub-domains, root-domains, or sub-folders so if your sites can be accessed on their own as a sub-domain or sub-folder, you can create up to 5 campaigns to isolate the data. When creating a campaign and entering the URL you would use brand1.domain.com or www.domain.com/brand1/ and check the box below to "exclude subdomains" which means this will only track the sub-domain/folder you enter. Make sure you are entering the URL as they resolve on search engines so if you enter a few keywords and one of your URLs resolve as domain.com/brand then you want to add the URL without the "www" or vice-versa. Hope this helps and let me know if you have any questions!