few minutes for u to pratice and brainstorm ur idea.
then enter examination rm discussion for 6 minutes with ur member.
after discussion.
examiner will ask u a question which is related to ur discus topic.
u hv to answer this question immediately,
no time for u to brainstorm.
u hv to answer this question for 1min
for more detail.
plz refer to the website of hkeaa. :)