I have editted the master display for commons_bw_posts view :
/admin/structure/views/view/commons_bw_posts/edit
to remove the Global : Node partial form.

I would prefer not to give the short form option to my users.
I would prefer that they always have to use the Full Form to create a new post, wiki etc.

However - once I remove the Node partial form, how best to provide the link to the Full Form for each Group ?