The 'Credits per year' spending is the calculation of the number of people multiplied by the number of Credits that will be rewarded.
Credits per year spending = # of people X Credits.
See the total budget per rule in the 'Credits per year' column.
Note: The '# of people' column on the Onboarding rule is determined by the number of people you manually enter and not according to the user list (this is only for your internal use).
*IMPORTANT: The rules will stop running when you deactivate them or when you run out of credits.