There is a trickle down from People to Process to Things (Technology, forms, docs, whatever). get the culture of the people right and the rest works. it doesn't work the other way. Changing technology on its own has zero impact on culture.
John Kotter says that the change process takes time and goes through several different phases in a successful change effort and that a mistake made during any phase of the change effort can have a negative impact on the organization. Kotter outlines an eight step process with suggestions to help organizations transform.
Of the four aspects of the P A I D model, People are the most difficult. Irrational, unpredictable and fussy, people take care and hard work to get maximum efficiency and effectiveness for the business.