Hi i  added first a column for tags.  K2 Admin Item View - found solution here and works fine. link

 

Now i face same problem like in article "Editing: Admin "steals" articles from users :o)"

 

So i thought to add in sql in k2_items a last item named created_by_first and try to save there the 

username of the logged admin. But this must not change. After creating an k2 article it must be not changeable. By this way you can see the article creator, and you can also assign an other author name.

 

Where is the php that i have to change for writing the user name in the db ?