124. Clerk of Parliament and other staff. PART V PROCEDURE IN PARLIAMENT 125. Person presiding in Senate. 126. Person presiding in National Assembly. 127. Person presiding at joint sittings of Parliament. 128. Quorum in Parliament. 129. Decisions of Parliament. 130. Right of Vice-Presidents, Ministers and Attorney-General to sit and speak in either House. 131. Presidential addresses and messages to Parliament. 132. Standing Orders. 133. Validity of proceedings in Parliament. PART VI LEGISLATIVE POWERS 134. Bills. 135. Procedure for passing Bills. 136. Presidential assent to Bills. 137. Acts of Parliament and their commencement. 138. Enrolment of Acts. 139. Amendment of Constitution. PART VII SUMMONING, PROROGATION AND DISSOLUTION OF PARLIAMENT 140. Sessions. 141. First and special sittings of Parliament. 142. Power of Parliament to determine its sittings. 143. Life of Parliament. 144. Prorogation or dissolution of Parliament. PART VIII ELECTIONS 145. When parliamentary elections must be held. 146. Qualifications of voters in parliamentary elections. 147. Electoral Law. -6-