Madam Pomfrey, who seemed to have pulled herself together, ran forward, conjuring a chair from thin air, which she pushed under McGonagall.
The sorting at the beginning of PA takes only as long as a fairly quick conversation between Harry, McGonagall, and Madam Pomfrey and a subsequent chat between Hermione and McGonagall.
In which we meet the Dursleys and learn of the peculiar happenings surrounding the arrival of Harry Potter on their doorstep including a conversation between Professors Dumbledore and McGonagall we also hear mention of Madam Pomfrey.
