We plan on having up to 10 in a shoot group. While the groups are photographing a concept we will split each group into 3-5 people who will be given the freedom to organize in whichever way they want. Each group will have about an hour at each concept. We will have staff watching to make sure that everyone is being given an equal amount of shoot time. The best way to maximize your time is to brainstorm some shots you want. It's not always necessary to get thousands of photos, try to be intentional and it will go a long way.