How to send AoR based approvals to multiple representatives in 'Payroll Timecard Approval ELA'

Description - We have a requirement that if there are multiple representatives then we want to send the approval notification to all the representatives of that employee. In 'Payroll Time Card Approval ELA' approvals, 'Include all representatives' button is not available in approval configuration. Also, in BPM worklist, there is no such functionality available to send parallel approval notification to all representatives.

Currently, Approval flow based on AoR sends timecard approval notification to any one representative out of multiple representatives for the given employee and that is random too. If it is approved by the representative to which the notification is sent, then the transaction is completed without the approval of another approver.