How to give access to CMS:
  1. Navigate to Content > Content Management System
  2. Hover over CMS name and click Mange Website.
  3. Under Staff Permissions click Give a User Access.
  4. Click Staff Privileges.
  5. Check all Boxes.
  6. Click Save.
 
How to give access to specific areas of the CMS:
  1. Navigate to Content > Content Management System.
  2. Hover over CMS name and click Manage Website.
  3. Under Staff Permissions, click Give a User Access.
  4. Hover over Webpages and click Privileges.
  5. Click your name and then click Add to each box. 
  6. Click Close.

Repeat with folders Content, Files and Content templates.