managery (n.)

1580s, "one who directs or controls," agent noun from manage. Specific sense of "one charged with conducting a house of business or public institution" is from 1705.

suffix indicating state, condition, or quality; also activity or the result of it (as in victory, history, etc.), via Anglo-French and Old French -é, from Latin -ia, Greek -ia, from PIE *-a-, suffix forming abstract or collective nouns. It is etymologically identical with -ia and the second element in -cy, -ery, -logy, etc.