Yes I am here, just got back from a very heavy corporate weekend dinner do. !

Sorry, the S8 doesnt support octane adjust in the same way.

However, you can load multiple maps into it (upto 8) and use inputs
to select them as you need.
When I say maps I mean complete configurations so you could load the
same file twice and just adjust the global ignition adjustment on one file,
That would then emulate what you need.
Very easy to set up