Rule 6 - Joinder and Intervention(A) Joinder of Taxpayer in Tax Court Appeals by Government Organization or Representative. In an original tax appeal in the Tax Court brought by a governmental organization or official representative, any person or persons whose liability for, or right to a refund of, taxes would be directly affected by the outcome of such appeal may intervene in the action pursuant to Trial Rule 24 if not already named as a respondent or joined under Trial Rule 20. (B) Right of Intervention. The Department of Local Government Finance shall have the right to intervene in original tax appeals of final determinations of the Indiana Board of Tax Review when the interpretation of its rules is at issue. This right of intervention shall not extend to settlement of the litigation between the original parties to the tax appeal unless the Department of Local Government Finance was a party to the action before the Indiana Board of Tax Review.