Time keeping
Try to take charge of time keeping. For example, if you have an hour to present your ideas, allocate time appropriately, get group buy-in and then ensure everyone sticks to those timings. Reiterate when the time is running out to complete each task. When the clock is running down, calmly and firmly inform your team.
Teamwork
You need to demonstrate your ability to work effectively within a team setting. Collaborate with your team members and praise their good ideas. And, if you get the opportunity to come up with a solution to a problem, this is a great moment to shine.
Communication
How you communicate with the other candidates is as important as how you communicate with the assessors. Treat them all with kindness, decency and respect.