Who can do this ?
Only project creators or users with the administrator role can invite members to a project.
Steps
Go to the Projects page by clicking on the ‘Briefcase’ icon in the left menu or by going to the following URL:
Choose a project by clicking on its name to open it
Click on the ‘Silhouettes’ icon to display the members panel
Revoke a member from the Trash can icon to the right of the member
Click on the icon to revoke the member
Information
Users or collaborators are immediately removed from the project and can no longer view or contribute to the project.