We often receive inbound sync requests after registering as a publishing entity administering a work. We will forward these requests to you.
If you'd like us to handle them, we are happy to help you at the same rate of 15%. We have some good insight on where/when/how to negotiate licenses, so you might consider using us for this as well.
However, we do not retain any of your sync rights, you are free to procure sync licenses on your own as you wish.