A global leader in testing, inspection, and certification services, headquartered in London, faced a complex challenge: rolling out a brand-new, untested Operating Model for their Americas Finance team. This required restructuring their finance organization, separating intertwined functions, and redefining responsibilities. The path forward was unclear, with undocumented work activities, outdated or missing job descriptions, and undefined core responsibilities. To make matters more difficult, the transformation was unfolding amid high attrition and widespread change fatigue.