Contact the System Role Administrator at your Organization to add the Membership Manager security role

How to add a System Role:
  1. From Administration, click Security
  2. Click System roles
  3. Select the role to assign users to
  4. Select the Users tab. This tab contains a list of users currently assigned to this system role.
  5. Click Add
  6. In the Application user field, search for the user
  7. Select the user record and click Select
  8. Click Save. The user is now assigned to the system role with the record access specified