Typically, the mediator, the parties and their attorneys attend a mediation conference.  In a civil case, the parties may also bring experts and consultants to a mediation.  For example, in a condominium construction defect case, the association may bring the professional engineer or contractor who prepared the report outlining the alleged defects.  In a family law case, a party may seek to bring their current spouse or significant other to the mediation.  In all cases, the parties have the ability to object to the presence of anyone other than the opposing parties and their attorneys at the mediation.  And anyone who attends the mediation are bound by the same confidentiality requirements that the parties, their attorneys and the mediators are bound to.