Hi Vishnu,
Good day.
Maybe you can consider to use POD in the first step of STO scenario. After PGI in outbound delivery, and then confirm the POD for your requirement.But this seems cannot fully conver your requiremnt.
Also, for more details about POD, please check following link in Wiki page:
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=436341157
Best regards,
Edward