Once all candidates have been seated for a particular exam, the exam details should go a different colour
This would be a double check that you have seated all the candidates for that exam. Also, it would be very easy to see where you were up to in creating your seating plans.
When viewing exmination results for a number of individuals in succession (say when writing tutor reports) it would be so much less frustrating if the wizard would remember the cycle when a different candidate is viewed - it always default to the ...