General Actions:
Tags are used for additional information added to a campaign, banner or plan. E.g. tag indicates the type of campaign sale - CPC, CPA, CPM, promo campaign.
Use:
More objects can be indicated by the same tag, or one object can be indicated by multiple tags. In this case one object can be assigned to several groups and can be counted more than once.
E.g.: You want to search all CPC campaigns in the system: