Portal Question - comments section

How do I put comments in the sales history area of the portal? I want to note certain events that affect my sales, but can't figure out how to add a comment in this area. I've used the comments in the manage stock area just fine, but in the sales history area, I'm stumped. Thanks for any help anyone can give :)

Thanks! I will try that. I use FF and IE, but for this I was using IE.

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