Hi pineapple
Me too. Does your institution not have any guidance notes you can look at? If not, you can look at the one's from mine.
http://www.ioe.ac.uk/doctoralschool/Upgrading.pdf
There's also an indication of timetabling and what happens vis-a-vis the upgrade process here.
http://www.ioe.ac.uk/doctoralschool/Upgrading_timetable.pdf
Our institution also gives a seminar on upgrading once or twice a year - in fact, I'm going to mine next Monday. Maybe you could check if they do this at your place.
Upgrading apparently varies depending on discipline. My institute is quite strict and the upgrade process is taken quite seriously - and is treated a bit like a mini viva. I'm not too worried, though - in fact, I appreciate the chance to practice - and the opportunity to prepare.