A committee can be created or dissolved at any council meeting, and does not require an agenda item?
dThe Council may appoint standing committees or other committees as may be necessary, and:
iv.shall, subject to standing orders 4(b) and (c), appoint and determine the terms of office of members of such a committee;
I don't see any reference in them to forgo the need for an agenda item.
Interestingly the SO says
x.shall determine if the public and press are permitted to attend the meetings of a sub-committee and also the advance public notice requirements, if any, required for the meetings of a sub-committee;
This is incorrect, by default Press and Public can attend all of them. A resolution must be passed for exclusion, NOT attendance. But it is influenced by NALC!