Will there be a 'hearing'?

Not as such.  Most disputes can be dealt with by way of facilitation or mediation by email and/or discussions via telephone or video conference.

Sometimes it may be appropriate to conduct  medaitions or conciliations in person. The Mediator will arrange this.

Adjudications are conducted "on the papers" -there is no one on one meeting with the Adjudicator. The Adjudicator issues a provisional decision, with an appropriate timeframe for response from parties before issuing a final, and binding (on the schem member)  decision.