How?
To connect a specific source or search term, into a brand, product or campaign, drag the source or term you want, from the left side panel and drop it over the brand, product or campaign.

Which is the result when connecting a specific sources?
Concentrate all the captured comments from that source into the brand, product, or campaign you want. Focusing all the captured comments, where you need them.
Which is the result when connecting a search term?
Search terms become in Positive Terms when connected to a brand, product or campaign.
Comments captured from specific sources already connected to an entity. Will feed other brand, products or campaigns?
Yes. Although you connect a specific source or search term into a brand, product or campaign, all captured comments from those sources will also be stored into the other brands, products or campaigns that matched with those comments through the positive terms.