When the present Archbishop Josaphat
Lebulu was Bishop of Same, Tanzania he and his pastoral co-workers tried to
re-structure the diocese according to a "Communion of Communities Ecclesiology"
and the geographical reality of the northeastern part of Tanzania.  The
traditional vertical structure of Diocese/Parish/Small Christian Communities (SCC)
did not seem to fit the local reality which included large, disparate, and
unwieldy parishes and a physical geography of many hills and small mountains. 

    The new structure
became Diocese/Center/SCC.  Rather than focusing on the 17 traditional parishes
they developed 55 Centers (similar to sub-parishes or outstations) and around
250 SCCs.   The priest(s) and other full time pastoral workers lived in one of
the Centers and not in what was formerly called the "parish headquarters" where
the rectory, convent, and primary school were located.

   
This is a new pastoral paradigm based on Centers and SCCs.  In this model
the diocese is a "Communion of Centers" and the Center is a "Communion of SCCs." 
The pastoral animation and service try to get down to the grassroots where the
people live and work.