How to change the starting chapter of a title
If there is no command table right click on the line that says "There is no PGC Command Table"
and select "add PreCommand". This will create a command table with one pre command, a NOP.
Now, since the command you want isn't one of the ones in the edit drop box, double click the NOP,
and a hex editor will open up for those 8 bytes.
You could use Jump_VTS_PTT from the drop box, but it requires the title number, we want to use Link,
as it is relative to the current title.
20 05 00 00 00 00 0x xx LinkPTTN (xxx = chapter number)