How to Create a Segment to Include or Exclude Retweets/Reshares
In order to create a new segment, the user must have monitor creation rights and the agency must have Monitors Enterprise.
The user must click "Create New Segment" in the Segments dropdown at the top of the screen.
Give your new segment a name, then click "Add rule group," and select "Is Retweet" from the dropdown field. Lastly, switch the third field's value to "false" and click Save at the bottom right to save the change.
Then you can go back to the Segments dropdown, find the new segment you created in the list, and apply it.