Managing Permissions

Setting Up Admin Users and Roles in Magento CE 1.8 and EE 1.13
April 4, 2013

Provide permissions to different areas of your Magento store's admin interface by creating roles and assigning them to users.

Sharing Access to Your Magento Account (for Enterprise and Community)
September 27, 2012

As the primary account holder, you have the authority to grant other Magento account holders limited access to your account.