Decentralization

[Sarah]

Decisions are made by many different groups and individuals.

To be elaborate, it's the separation and distribution of authority, resources, and/or bureaucratic processes and jurisdictions to lower levels of [government], divisional and departmental levels, or lower/middle-level managers.

[Kit]

the act or process of decentralizing an organization or government (= moving control from a single place to several smaller ones) :

[Raeanne Dimick]

The transfer of control of an activity or organization to several local offices or authorities rather than one single one.