Allow team leader to choose which team members are included in team surveys

Sometimes, people on projects as team members have very limited roles on the team, and it doesn't make sense for them to review the other team members or for the other team members to have to review them. The team leader should be able to decide which of the team members will be included in the team survey process.

This could possibly be done directly in the team member list with checkboxes that only the team leader would have access to change (and view?), or it could be done in an extra window that pops up right as the team leader presses the button to send out the surveys after the completion of the project. All people on the team as leaders or members would be selected by default.