How can corporate culture be changed? When should someone from outside a company be hired to manage the company or one of its business units?

Question 1

How can corporate culture be changed?

Question 2

When should someone from outside a company be hired to manage the company or one of its business units?

Question 3

What are some examples of behavior controls? Output controls? Input controls?

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Steinmann, H. (2008). Towards a conceptual framework for corporate ethics: problems of justification and implementation. Society and Business Review, 3(2), 133–148. https://doi.org/10.1108/17465680810880062
Egbunike, P., & Unamma, A. (2017). BUDGETING, BUDGETARY CONTROL AND PERFORMANCE EVALUATION: Evidence from Hospitality Firms in Nigeria. STUDIES AND SCIENTIFIC RESEARCHES. ECONOMICS EDITION, (26). https://doi.org/10.29358/sceco.v0i26.398