Conditional Drop Down Field Use in Editable Embedded Table?

I have two tables; Release Orders and Release Order Line Items (parent, child respectively of course). Instead of adding each RO Line item individually, selecting a conditional drop down field, adding quantities and then saving, I want the end user to be able to select the conditional drop down field from the embedded editable table in the Release Order table, enter the Qty of the and fly through the order. Unfortunately, I am unable to find a simple solution for this issue . If there is a native way to perform this, I'd like to hire a developer quickly. :)