I want a macro that has Note: instead of username, in bold
and then pauses for the rest of the text.
From www.contextures.com I found.

Sub CommentAddOrEdit()
'adds new plain text comment or positions
'cursor at end of existing comment text
Dim cmt As Comment
Set cmt = ActiveCell.Comment
If cmt Is Nothing Then
ActiveCell.AddComment text:="Note: "
End If
SendKeys "%ie~"
End Sub

But how do I make the Note: bold and reset to normal for
text input.

Thanks