Under Manage>Content>Documents select a document.
Once in the document identify which question you would like to edit and click the icon .
Edit the Question and Response as you need, then click Save.
A pop-up will appear with options for what type of update is occurring.
1. Minor- The question will be updated in this and all other documents where this question is contained, but it will not effect the document status as a whole. Pulling a pop up that will list the altered documents.
2. Major- This will send the document in question to a draft state, requiring you to submit the new version to activate the document.