(1)Lay justices are to be appointed for England and Wales by the Lord Chancellor by instrument on behalf and in the name of Her Majesty.
(2)The Lord Chancellor—
(a)must assign each lay justice to one or more local justice areas, and
(b)may change an assignment so as to assign the lay justice to a different local justice area or to different local justice areas.
(3)Every lay justice is, by virtue of his office, capable of acting as such in any local justice area (whether or not he is assigned to it); but he may do so only in accordance with arrangements made by or on behalf of the Lord Chancellor.
(4)Rules may make provision about the training courses to be completed before a person may exercise functions as a lay justice in any proceedings or class of proceedings specified in the rules.
(5)Subsection (3) is subject to section 12 (the supplemental list).