Layers can be added by clicking the Layers button in the Toolbar. This will pop-up the “Layers” panel on the right side of the drawing canvas.
Adding Layers:
Hiding Layers:
Changing Layer Order:

Locking Layer:

Duplicate Layer:
Moving and Deleting Layer:
Renaming Layers:
Layers can be renamed by double-clicking on the existing name with your mouse. This works the same as editing text anywhere else in the application.