To create custom association types, you must belong to a role that has the Manage Asset Types permission. Besides allowing you to create custom association types, this permission allows you to edit and delete any user-defined association type. Additionally, it allows you to edit certain predefined association types installed by CentraSite. By default, users in the CentraSite Administrator and Asset Type Administrator roles have this permission, although an administrator can grant this permission to other roles.

For more information about permissions, see Getting Started with CentraSite.