Wideband Delphi is a method used to get a group of people to come to an agreement on solving a problem. It works by asking each person in the group to separately think of solutions to the problem and then come together to share their ideas and opinions. Through a series of rounds of conversation, the group is able to come to a consensus and decide on the best solution. This method is used to make sure all voices in the group are heard and each opinion is respected.