You can add a blank slide to your document in a few different ways:
1. From the document toolbar:
Click the three-dot menu (•••) at the bottom of the canvas
Select “Add slide below” from the menu
2. From the mini navigation:
Hover near the edge of the document to reveal the mini navigation
Scroll to where you want to insert the slide
Click the "New slide" button at the bottom on the drawer
3. From the canvas:
Hover between two chapters or at the end of the last chapter
Click the “+ Blank slide” button that appears
