SuiteAnswers will be your best tool.
I'd recommend looking into the Planning Workbench (
SA link) as it's a much better tool for the supply side of things than the old Supply Planning - also Advanced BOMs are required for outsourced MFG, so the workbench/MRP can be used also.
For Outsourced Manufacturing (
SA Link), you'll need to create one of the POs or the WOs through supply generation... I can't remember which way the automation runs to create the other document since it's been a minute
If someone was telling you the whole thing was automated, then they were using a custom script.