We have a custom Shipping Container record / process that we use to move /manage our logistics. I am aware of NS inbound shipping feature but to my last recollection, it doesn't work with lot controlled items - which is critical for us. Our users find it tiresome to have to add each shipping container line (often a partial quantity from the Order). I would like to make it better by giving them a UI where they start from a PO, which then shows open lines and open quantities on the POs, and then add these as shipping container lines. Does anyone have any suggestions for frameworks to develop custom UI suitelets / user event scripts?