It is very easy to amend a letter on Proclaim, you will need access to Workflow Maintenance, and you can amend a letter by doing the following:
Open Workflow Maintenance
Select the letters tab
Select the case type at the top left, that your letter is in
Locate the letter from the list of letters in the table
Click on the letter
Click on the word/pdf icon at the bottom right
Make any amendments in the software it opens in, and save after making an amendment
You have now amended the document and these amendments should pull through into your workflow.
Note: If you or your system administrator don't have access to Workflow Maintenance, please raise a new case online and reference the title of this article.