In order to configure the URL Targeting/Trigger for your campaigns go to “Trigger” tab while creating or editing a campaign.
Under the URL Targeting, there are 3 sections :
Include - Under this section, you can ‘INCLUDE’ the URL on which you wish to run the campaign. You can further ‘ADD’ multiple ‘INCLUDE’ URLs which have ‘OR’ conditions between them - i.e. even if one condition is fulfilled, the campaign will run on that page.
Exclude - Under this section, you can exclude any URL where you don’t want to show your campaign. In order to add any such URL, click on “Add”.
Referrer - You can also run different campaigns based on different traffic sources. ‘Referrer’ condition enables you to run different conditions based on different sources.
For example - If you add ‘Facebook’ under the referrer section, the campaign will be triggered only for users coming via Facebook.
Further, ‘Include’, ‘Exclude’ and ‘Referrer’ has ‘AND’ condition between them, i.e. if you use any two of them or all of them, then all the conditions specified must be fulfilled.

Note: Along with referrer, you have to Use Include URL.
Now under these 3 sections, there are 3 options available-
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