The relationship between the chief of staff and CEO is key to maximizing efficiency and growing a business, but it takes time and deliberate effort to build a strong one. Spending some time in the front end--especially during those first 90 days that a CoS has been brought on--to build the relationship and find cadence is critical to creating a powerhouse team that expands the CEO’s impact. Structure the Role If this is a new role, the chief of staff (CoS) may be building it from the ground up.