How I can edit the user access manually?

Hi,
how can I edit the user access manually? I want to edit the "to" field but I see no edit button.
But I don't want to remove the invoice because of the reports and affiliate commision.

Its still a bug because the payment module created wrong user access on old subscriptions.

Maybe I have a chance to edit this entry in the mysql database? Why I can't edit this line directly in aMember? Its a little bit inflexible.

Thanks!