For want of a better channel to post it in, is it possible to create a custom record type that has child lines, and allows editing of said child lines like the item/expenses sublists appear on transaction documents? (so with Add/Cancel/Edit etc & have client scripts firing). I think I'm just missing an option somewhere that I haven't seen - I've setup parent/child between 2 custom record types for the main & line components of the record, but i'm just getting a "New XYZ" button on the sublist view & no inline editing at all