It is, and I think it's a point of order in its most elementary form.
I'd like to know specifically under what authority you have called us to order and where in the Standing Orders you can convene a meeting with only five minutes' notice. If you could quote me chapter and verse as to where in the Standing Orders or the jurisprudence of this place you can convene a meeting that way, I'd like you to let me know, as a professional courtesy to another chair. It may happen to me.