All 3 Uses

implement
in
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By mid-1991, Ramiro had undergone a few months in a psychiatric hospital and various counseling and family sessions that also involved bringing his mother in from L.A. We implemented an educational and employment plan, worked out with school officials, teachers and social workers (everyone who had dealings with him had to be involved, to get them on "our side" so to speak).†
Chpt Pref.
He'd just sit there and stare at a wall, forcing Mama to resort to other implements of pain — but Rano would not show any emotion.†
Chpt 1 *
But still, Mr. Madison implemented Plan B. I had designated 1 p.m., following the lunch period, for everyone to meet on the lawn.†
Chpt 9 *

Definitions:

(1) (implement as in: implement the action)
put a plan, decision, or rule into action
(2) (implement as in: a small implement)
a small tool or other useful object
(3) (meaning too rare to warrant focus)