Additional Authorizations for KM Folder Structure 
The Knowledge Management component has a folder structure that you can administrate as a portal administrator.
To assign authorizations for the folder, use SAP Note 578947. There are supplementary special authorizations for Knowledge Management in SAP CRM, which are detailed in the following:
Discussion forums
Authorizations
For everyone: Read OR read/write, according to need
Read for users who participate in active discussions and can delete their own contributions if there are no replies to them.
Read/write for users who create new discussion forums and discussions, who participate in active discussions, and who can delete all discussion topics even if there are replies to them.
Read for partner managers.
<form_ID> (whereby <form_ID> can be FAQs, News & all other new projects)
<form_ID> is a subfolder for documents. For more descriptions, see under sapcrmnews.
Authorizations
For everyone: Read OR read/write, according to need
Read for users who may see resources
Read/Write for authors who may create and maintain resources
Links
Authorizations
For everyone: Read OR read/write, according to need
Read for users who may see resources
Read/Write for authors who may create and maintain resources
Public Documents
Authorizations
For everyone: Read OR read/write, according to need
Read for users who may see resources
Read/Write for authors who may create and maintain resources
Discussions
Authorizations
For everyone: Read
Read for users who participate in active discussions and can only delete their own contributions if there are no replies to them
Read for partner managers
Read/Write for users who participate in active discussions and may also delete all contributions to discussions