The Commission shall give the claimant and the licensee or unlicensed employee alleged to be responsible for the act or omission giving rise to the claim an opportunity to participate in the hearing before the Commission. The Commission shall give notice of the hearing to: the claimant; each licensee alleged to be responsible for the act or omission giving rise to the claim; and each unlicensed employee alleged to be responsible for the act or omission giving rise to the claim. The Commission may not proceed with the hearing unless the records of the Commission show that all notices required under this subtitle were sent to each licensee and each unlicensed employee alleged to be responsible for the act or omission giving rise to the claim.