SetMonarchMethodCashFlowFixedExpenseSettings
Set which of the household's expense categories count toward the Cash Flow pillar.
The provided set replaces any previous selection; an empty list is a valid answer meaning nothing counts. Every id must be one of the household's current expense categories.
type SetMonarchMethodCashFlowFixedExpenseSettings {
cashFlowFixedExpenseSettings: MonarchMethodCashFlowFixedExpenseSelection
}