Your client has a performance process where employees can enter goals.

Your client has a performance process where employees can enter goals. The individual part of the employee's bonus is based on the performance against these goals – but not all of them. When going through the goal setting process, the employee and their manager will discuss whether or not a goal is "bonus relevant" – that is, the employee's attainment against that goal affects their bonus at the end of the year. What is the best way to set this up without administrative intervention?