(b) (1) Each jury plan shall set a minimum number of names to be selected from the source pool as prospective jurors.

(2) The minimum number shall be:

(i) At least 150; and

(ii) Except as provided in paragraph (3) of this subsection, at least 0.5% of the total number of names in the source pool.

(3) If the minimum percentage under paragraph (2)(ii) of this subsection would be cumbersome and unnecessary, a jury plan may set a smaller number.

(4) A jury judge for a county may order its jury commissioner to have additional names selected from the county’s source pool as the judge considers necessary.