Pay Alone Check Box for each Supplier Site

Summary

Was wondering if there is a way to mass update the Pay Alone check box for each Supplier Site for a Supplier?

Content

We have a need to check the "Pay Alone" check box for each Supplier Site created for a Supplier, is there a way to mass update this, instead of manually going into each Supplier Site --> Payments --> Payment Attributes --> Payment Specifications to check the box?

Thanks!

-Alan