I tried to search this resource in the support center, but I did not find it.
I do not know if there are this tutorial or example here?
Charles' book is still available on mentor.com. See https://www.mentor.com/pcb/resources/overview/bga-breakouts-and-routing-5e5d097e-55e4-47f6-b5af-dcc55e1892b0BGA Breakouts and Routing - Mentor Graphics .
There used to be a PDF available here written by a Mentor employee named Charles Pfeil called "BGA Breakouts and Routing, 2nd edition".
Maybe they removed it since he left the company, but you can find it on the internet.
Check out this video and see if this helps: HDI Fanout and Escape Demo - Mentor Graphics
There may be other videos in the resource area that cover this as well
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