Where the parties have agreed that there is to be a chairman, they are free to agree what the functions of the chairman are to be in relation to the making of decisions, orders and awards.
If or to the extent that there is no such agreement, the following provisions apply.
Decisions, orders and awards shall be made by all or a majority of the arbitrators (including the chairman).
The view of the chairman shall prevail in relation to a decision, order or award in respect of which there is neither unanimity nor a majority under subsection (3).