This presentation expression is really important for an effective presentation because you need to know how to transition from one topic to the next. This is also known as signposting in a presentation.
To put it simply, you need to know how to start and end a topic in your business or sales or school presentation and transition to the next topic.
This helps your audience to easily follow your presentation and your presentation will be far more effective.
Check out the video to learn the expression and how to use it.