Occupational Parental Bereavement Payments for more then one child

We have a test scenario where when an absence is submitted and then in absence cases if we amend the number of children,the occupational plan as only entitles for 14 days for one child and doesn't calculate entitlements for another child in this case. The statutory plan does calculate this and pays the employees. Is there a way the occupational plan also behaves the same way statutory does? I know the workaround is raise another absence for another child but looking for suggestions if anyone has achieved this!