I sat my 7-6 exam in July, so most of the details are still fresh in the memory!
We had a brief introduction from the instructors, and sat the exam straight away. It's a basic exam covering every law, but be aware some questions are 'trick' questions and look for the correct answer in law, not necessarily what you would do in a game. I passed with 64/70 (35 questions worth 2 marks each) so I was pretty pleased with that! Everybody at the seminar passed the exam, so as long as you are confident with law knowledge you'll be fine.
After the exam the instructors went through a couple of aspects that will come up on assessments, such as Positioning + Movement & application of law, mainly focussing on recognising tackles and dealing with them. I presume every seminar is different though, so your one may be completely different to mine.
Good luck for October!