Multiple net to gross pay codes in same month

Is there any way please that we can have more than one net to gross calculation included in each payslip? For example, an employee might have a gross to net salary, a net to gross bonus and a net to gross BIK. Currently, I believe, there is no facility to do so. It is not such an issue when combining multiple medical BIKS for net to gross under one heading, such as Health and Dental cover, however we would really need the bonus stated separately. Thank you!