How do I remove a collaborator?

Here are a few steps if you want to remove a collaborator from your project:

1. Click the Invite icon from your profile page
   
   
   
   
2. Click the X icon beside a collaborator's name
   

If you want to keep a copy of a collaborative project but don't want to remove collaborators, you can simply open the project, go to File then choose Save As. This will generate a copy of the projects with the collaborators excluded.