Whenever you add a subagent to an invoice, you have also made a payable income sharing invoice.
Unpaid payable income sharing indicates that agents have not received a commission amount from partners. Thus they are unable to share with other branches and subagents.
Paid payable Income sharing respectively means agents have already received the income and been able to pay other branches and subagents. You can find all your payable income sharing invoices in the payables tab of income sharing.