Document Manager is not displayed on the toolbar for the logged user with RWA on a page

I logged with my user steven with RWA rights on activity page of demo. Home page already in live en both lang.
In edit mode I don't have FM engine in my toolbar but through the gwt pickers of update engine, fck,.... I have access to all the its files !!!!! Have I missed a feature?

Shouldn't all the users who have access to edit mode have FM engine is their toolbar?