In nominal group technique, discussion during the decision making process is restricted. The group members must be present just like in a traditional meeting, but they must work independently. The group members should secretly write a list of general problem areas or potential solutions that they think may solve the problem. With nominal group technique, the group members can meet formally, without having their independent thinking restricted.
The nominal group technique is suitable for groups who want to make a quick decision, but want the opinions of everyone in the group to be taken into account (unlike traditional voting where only the largest group is being considered).