| Signal to presenter | Buzzer | 
|---|---|
| Start time | |
| In two-thirds progress | 3 buzzers | 
| At the end of presentation | 5 buzzers | 
| At the end of presentation time | Consecutive buzzers | 
| Preparation: | Please start the preparation at the time of exhibition starting time. | 
|---|---|
| At the time of presentation: | Bell rings for 30 seconds. | 
| At the end of presentation: | Bell rings for one minute. | 
| Removal: | Please remove posters before the end of exhibition hours. |