It's also working on potential incentive payments as part of its cooperative difference programme - a strategy to increase the importance of on-farm sustainability that rewards farmers who go beyond minimum targets.
Fonterra said the changes won't affect the cooperative's balance sheet or hit its credit rating.
Separately, Fonterra said professional director Holly Kramer will join the board as an independent director from May 11.
Kramer is based in New South Wales and currently sits on the boards of Australian retailer Woolworths and Australia Post. During her management career, she was chief executive of clothing and linen retailer Best & Less, and also held senior roles at Ford Motor Co, Telstra, and Pacific Brands.
"Holly's experience in customer-centred leadership, transformation, e-commerce, technology and multinational organisations will complement the existing collective skillset of our board," Monaghan said.
Shareholders will vote on ratifying her appointment at this year's annual meeting.