Adding a tag to an existing tag group
You can add a tag from a different tag dictionary to an existing tag group. Optionally, you can add a tag from the tagdictionary palette. Shown in the following image, the 
hs:hvac tag (copied from the Haystack tagdictionary) is added to MyTagGroup in the Building tagdictionary.Prerequisites:
- At least two tag dictionaries are installed.
- One of tag dictionaries contains a TagGroup.
Perform the following steps:
- In the Nav tree, expand the tag dictionary to the TagGroup that you wish to edit.
- Expand the second tag dictionary to select a Marker tag that you wish to add to the TagGroup in the first tag dictionary.
- Drag (or right-click and copy) the selected tag, and drop it (or right-click and paste it) on the TagList folder of the Tag
Group Definition that you edit. NOTE: An alternative is to add a Marker tag from the tagdictionary palette.
- In the Name window, enter the tag's desired name as a fully qualified tag name including the namespace with the colon separator. For
example: hs:hvac.NOTE: There is no verification that the tag name entered is actually defined in a tag dictionary. If it is not defined in a tag dictionary, the added tag is an "ad hoc" tag. While you can certainly use ad hoc tags, the recommended tagging best practice is to use tags that are contained in a standardized tag dictionary that is applied system-wide.Changes to the tag group are saved automatically.
This namespace overrides the application of the parent dictionary's defined namespace. The added tag automatically becomes
an
n:tagGroup relation (an implied tag) from the component to the corresponding tagdictionary's TagGroupInfo.