Because Knowledge Manager solutions and their attachments are versioned assets in a content repository, any solution-authoring user needs appropriate access rights to create and upload attachment files.

To allow the ability to upload solution attachments:

Since template roles are inherited within organizations, add the EPub-User role to the highest-level organization that includes all of your solution-authoring users. Any users belonging to that organization or any of its sub-organizations then inherit the EPub-User role and do not need it to be explicitly assigned to them.

Granting User Segment Access to Field Security