A high level look at Onshape PCB Studio and how to go about using IDF to integrate to the ECAD world. This is just the basics, though it touches on some important in-context modeling tips. There are many ways it could be done, this is just one.
Over the years I have laid out a bunch of these for the same 1590B enclosure, so things don't really change or need start from scratch each time. But for new shaped enclosures this workflow would be particularly powerful.
Note: It is not a step-by-step for how to set up a PCB Studio library, nor is it a step-by-step of creating schematics in Altium Designer. Both of these might make good future episodes!?! Let me know your thoughts in the comments below...