The term “party” means any person, employee, group of employees,
labor organization, or bank as defined in section 269.2 of this chapter (a)
filing a charge, petition, application, or request pursuant to these rules
and regulations, (b) named as a party in a charge, complaint, petition,
application, or request, or (c) whose intervention has been permitted or
directed by the investigator, the hearing officer, or the panel, as the case
may be, but nothing shall be construed to prevent the panel, or any officer
designated by it, from limiting any party’s participation in the proceedings
to the extent of his interest as determined by the investigator, hearing
officer, or panel.