Which of the following is NOT a feature of nominal group technique?

Participants in nominal group technique do not meet face$-$to$-$face.

After the problem is described, team members silently and independently write down as many solutions as they can.

Nominal group technique discourages criticism or debate.

After ideas have been presented, participants silently and independently rank order or vote on each proposed solution.

Nominal group technique follows an individual, then team, then individual process.