Maybe I am just missing the option, but can we not set a custom PIN number? I am only seeing a way to regenerate from the main page.
Also, someone may want to finally fix the page selection on the forum. At the bottom right where you can see the Next page button, it takes you to page 361 - each time. By default you can only go to page 1 or then right to 12 so it is very annoying to navigate.
Custom PIN number is not implemented, you can try Custom Password or Encryption Key authorization. PIN is a dynamic value, which is constantly changing and only used in Attended Access.
I use both options, but do not like how it logs out the current user and takes forever for the desktop unlike in previous versions where it was instant.