The sessions of WP.29/AC.2 and of the World Forum ( WP.29 ) begin at 10.00 a.m. ( the first day only ) . During the WP.29 sessions , the Administrative Committee of the 1958 Agreement ( AC.1 ) will hold its sessions usually on Wednesday , sessions of the Executive Committee of the 1998 Agreement ( AC.3 ) are expected to be held on Thursday morning , and sessions of the Administrative Committee of 1997 Agreement ( AC.4 ) would be held on Wednesday or Thursday afternoon , if necessary .