On Thu, Oct 7, 2021 at 01:17 PM, I wrote:

A single person not understanding what is in front of them does not suggest that non - understanding of these particular functions is widespread.

Further to the above the steps required to reply to a post (either to the group or only to the sender of the message) are clearly set out in Para 7.3.3 of the pdf version of the Members Manual.

Chris