Need to know how can to set up our orchestration processes for MFG of process

Can someone help me understand how to configure orchestration processes for a manufacturing process where I need to produce a finished product but first I need to produce sub-products and also in some cases, I need to buy raw materials, I need to be able to create chained orchestration processes but my manufacturing is divided in separate processes.

I appreciate it a lot if anybody could share specific documentation on how can achieve this.

One example

The product to make Ketchup is the product to sell but only produced by customer requirement.

But not in inventory. Need to create the WO to produce