If formal proceedings are found to be needed under the above procedures, and if no satisfactory settlement has been reached within 5 days after finding that a prima facie case exists, the Secretary of the panel, unless there is cause for granting an extension of time, shall issue and cause to be served upon the parties a notice of hearing. The panel shall appoint, pursuant to § 269b.420, a hearing officer to hold a hearing and issue a report to the panel containing findings of fact, conclusions of law, and recommendations including, where appropriate, remedial action to be taken and notices to be posted. The Secretary shall furnish to the hearing officer the investigator's report and all other relevant information in the panel's possession.