S.L. const.2 Art. 72Procedure in Committee of Supply.

When a motion is made in Committee of Supply to omit or reduce any item of a vote, the question is proposed from the Chair for omitting or reducing that item accordingly, and members shall speak to that question only, until it has been disposed of; but in the debate reference may be made to other items in the Estimates in order to explain or illustrate the question under discussion.