**/ All the sessions shall be confirmed by the conference services . During the WP.29 sessions , the Administrative Committee of the 1958 Agreement ( AC.1 ) will hold its sessions usually on Wednesdays , at the end of the afternoon ; sessions of the Executive Committee of the 1998 Agreement ( AC.3 ) are expected to be held on Wednesday afternoon , if possible and on Thursday morning , and sessions of the Administrative Committee of 1997 Agreement ( AC.4 ) will be held on Thursday following AC.3 sessions , if scheduled .