1. Set scope of issue (tags : frontend/backend, Milestone, etc)
2. Set type of work (tags : TODO, question, BUG, etc)
2-1. (TODO) Describe the functionality that needs to be implemented.
2-2. (BUG) Describe the symptom, and condition under which the problem occurs.
3. Someon should inform others of the branch where it is implemented after implementation. (tag : Implement)
4. Another person should review the code and give approval. (tag : Review)
5. After reviewing, the issue can be closed. (closed)