list of available task not seen in to-do list

System

Hi,

I have set up a new workarea for editor (owner), shared by all users ivolved in content development. When an author makes change to a file in this workarea and tries to submit the change, he must go through an explicit wf. But when owner of the workarea log in as an editor, he got the new job line in to-do scree without list of avalilable operations (he got NA instead). What is wrong ?