I'm collaborating to write a document and my supervisor has asked me to do
this:

"...see if you can change your Microsoft Word identity from MS Office to
your name/initials. As multiple people look at the document, it’ll be good
to know exactly whose comment it is we’re reviewing."

I have tried searching the help docs for a function like this, but haven't
had any luck. Can anyone help me figure out how to do this?

Thanks very much in advance!