A supervisor normally has a written evaluation plan with pre-motioned ideas of what areas they plan to monitor and assess. One of the best ways to ensure the manager knows what is expected of them is for the supervisor to discuss what areas and performances will be evaluated. When you collaborate with your employee about what criteria will be assessed and measured, they not only know what to expect in the future, but they also feel as though they are part of the process and will feel more responsible for upholding their end of your new bargain.