To save a new lesson and place it in a folder, follow these steps:
With your slides open, click the Save icon (diskette) in the toolbar.
Give your lesson a name and click Save.
This will save your slides to the “My Lessons” folder, which can be accessed by clicking the blue folder icon in the toolbar.
Open My Lessons and hover your mouse over the lesson thumbnail.
Click the blue button with the ellipsis on it.
Click Move in the pop-up menu and select a folder.