Hi there,
Thank you for your question.
If I understand your question correctly, you are trying to categorize values of utm_campaign into two values "Branded" and "Unbranded". If you have multiple entries in your utm_campaign that has branded appended to it but you want to categorize it into just one word branded then you can use classification rule builder to create rules which classify everything that has the word "branded " in it as Branded.
Hope this helps!