You will find two default rules already created in 'Settings' - 'Company Settings' - 'Rules' but still inactive; one for automatic deduction of meal vouchers and one for expenses during the weekend. You can activate them if they are relevant for your company by clicking on the rule to open it and check the box before the option 'Active'.
You can also create new rules by clicking on the green button ‘Add rule’ and completing the shown steps.
You can choose if a rule is set for single or multiple expenses. When selecting multiple expenses, you can set a time range for the rule (for example, you can set a limit for parking expenses of 50 euro per year).