In the text found on page 371, lines 25-27 (text that is new to the 11th edition, by the way) we read:
"In an agenda, often an hour is assigned only to such subjects as the calls to order, recesses, adjournments..."
The difficulty is that a "call to order" isn't an "item of business" (i.e., something the assembly can act on in a meeting) and shouldn't be included in an agenda at all. See the footnote on page 26. A "call to order" takes place before the meeting begins.
I suppose this could be remedied by dropping "the calls to order" from the quoted text, or by changing "agenda" to "program", the more all-encompassing term.
I'll leave that decision to the authorship team.