An affinty diagram is a tool that is used to group ideas for better overview after a brainstorming session.

Step-by-step approach:
1. Transfer data onto cards or post-it notes
2. Group the cards to find the “affinity”
3. Label the groups of cards
4. Group the Clusters (Optional)
5. Draw the diagram
6. Combine ideas into solutions

Tip: To avoid long discussions, try the following: Whilst grouping the ideas, the participants are not allowed to talk to each other.