A tag is a way to group locations so that you can view their data in aggregate, and compare data easily across those locations.
To create a tag on your dashboard, head to the Locations tab at the top of the page
Click the ‘Manage Tags’ button
Click on the ‘Add Location Tag’ button
Enter desired tag name
Locate the new tag in the list on the left
Select all locations you would like to apply the tag to
Once all the desired stores have been selected, click ‘Update’ under the list of stores to the right