From the xCenta Dashboard, click on Tools > Admin in the top right of the screen.
From the administration screen, click on Manage Roles.
A new screen will appear. Click on the Choose Role drop down box and click on the relevant role.
Scroll down the page, tick the Relevant Permissions that this role requires and click on the Save button.
If you are unable to follow these instructions, you may not have the required user permissions. Please contact your Site Administrator.