You can group one or more sensors to view visitor data from specific destinations more easily. To make a group, first create a group and then add the desired sensors to the formed group. Navigate to > sensor settings > Groups and then click the tool icon. Name the new group and click Save Changes.
You now can add sensors to the group: sensor settings > sensors tool icon > groups > from the drop-down menu, select the group you created and save the changes. There are no restrictions on how many or how few you can add to one group. The newly created group is now accessible when you browse data.