No exclude sources button turnitin

1. Why can't I exclude sources in Turnitin?
2. What does it mean to exclude text in a Turnitin?

Why can't I exclude sources in Turnitin?

To exclude sources from the similarity report using the All Sources side panel, click the graph icon from the similarity toolbar. If the similarity layer was inactive, it will now be activated, highlighting all on-paper matches. Click the Exclude Sources button at the bottom of the All Sources side panel.

What does it mean to exclude text in a Turnitin?

Content exclusions can include removing any matches to the bibliography or any places within a document where the author has used quotes. Changing your settings will only change the setting for future uploads.