4.11—Appearance; testimony; cross-examination.
(a)
The applicant shall appear and, except as otherwise provided in § 4.10, shall testify at the hearing and may cross-examine witnesses.
(b)
The Secretary and others to whom notice has been sent pursuant to § 4.7 shall be afforded an opportunity to appear and present evidence and cross-examine witnesses, at any hearing.
(c)
In the discretion of the Commission or presiding officer, other witnesses may testify at the hearing.