mediator
When 2 parties do not agree on something, a third person called a mediator can talk to both of them to try to help them reach an agreement. This process is called mediation. A mediator is neutral, which means they do not take sides. They do not have the power to decide anything or force anyone to agree to anything.
If the mediation process works, both parties will make an agreement on some or all of their issues. This will not need to have a hearing at a court or tribunal about the things they agree on.