Send a mail to firstname.lastname@example.org requesting to install iNotes.
When you get an answer from IT saying you are now a iNotes user, CHANGE PASSWORD and wait 1 day before doing anything further. (It is recommended you change password when you leave for the day, so that the update will be done over night.)
Go to your explorer window and find the M folder.
There you will find a file under M:\.Notes\user.id
Add this to your iNotes user on the webpage(https://ica.uio.no/)