Hi aero1199 ,
Thanks for your post.
FYI, custom coding isn't included in our support scope. I'll give you some hints, but that is all I can do. I hope you understand.
You can see on the Inbound Products that each entry is linked to a PO. The expected date shown is a postmeta ('_date_expected') field from this PO.
You can get its value using the WP's get_post_meta function.