[a] support the work of the ASEAN community councils and ASEAN sectoral ministerial bodies
[b] coordinate with ASEAN natioal secretariats and oter ASEAN sectoral ministerial bodies
[c] liaise with secretaries-general of ASEAN and the ASEAN secretariat on all subjects relevant to its work
[d] facilitate ASEAN cooperation with external partners
[e] perform such othervfunctions as may be determined by the ASEAN coordinating council