how do I to affix (sign) editor (me) name to any comments?
Open Tools > Options > LibreOffice > User Data and enter at least one name there so LO knows a name for you.
In Tools > Options > LibreOffice > Security > Security Options and Warnings make sure that Remove personal information on saving is not ticked
Cheers, Al
If you are commenting someone else’s work from Microsoft make sure they aren’t sending you documents for comments where they have removed the author’s name.