OK! that's what an external auditor will want. But "show me the shall" for documenting inputs...there is none.
Management Review has long been discussed. I think many people over think this. In the past some people have even interpreted the requirement to be one big meeting once a year (minimum), which is not the case.
In this discussion I do not see an issue. Management reviews have an agenda. It would be difficult to hold the meeting if a documented (written) agenda was not made and communicated to prepare people for the meeting and to guide the meeting. That agenda should list all inputs. If other inputs do come up they should be entered into the (documented) meeting minutes.
Remember: Management Review Outputs are Inputs to the NEXT Management Review meeting.
As to "... show me the shall ..." - In general I would go along with that line of thought if an auditor asks for something there is no specific "shall" for. But, in this case it is the basics of having such a meeting that really require a documented agenda.
For some thought on this, read through:
What should be included in Management Review Meeting for ISO 9001:2015?
That said, even though there may not be a specific "shall", I certainly would have a documented agenda and if the auditor asked for it I would happily provide it.
I think the old saying goes: "Choose your battles carefully". I wouldn't get into a pi$$ing match with an auditor over this.
Since we're on the topic, you might also want to read:
Management Review Input/Outputs - Most Items Discussed in Other Meetings
I did do a Goggle search on "
effective meetings" and all essentially were like this one:
https://www.thebalance.com/effective-meetings-produce-results-before-the-meeting-1918729 - Every one says (and I fully agree) that a written agenda in necessary for an effective meeting.
As a last thought, a documented agenda, as well as meeting minutes and documented outputs may be important in the future such as if a legal issue arises, and in general the
outputs of management review meetings are important to
Continuous Improvement.