The Layers tab can be found at the right side, along with the Properties tab.If it's not there, go to View tab and put a check mark on Layers list option;
When a user adds a layer to his plan, the first one he was working on automatically becomes the background.
To add a layer, just go to the Layers tab and click the green plus sign.
Layer 1 will then appear right above the Background layer.
The arrow on its left serves as an indicator as to which layer you are working on.
So if you want to make some modifications to the objects drawn on the background but the arrow is at Layer 1, you will notice that you are unable to select/highlight an object even if you had clicked on them.
In the Layers tab, click Background to move the indicator arrow pointing to the Background layer.
Now, you'll be able to edit the objects on the background.
Just move the mouse over an option in the Layers tab and a text will appear telling you the name of the function or what it does.
Toggle Layer Visibility (eye icon) - hides the layer so the user can see only that layer which he wants to work on.
Lock/Unlock layer - A user cannot edit that layer if option set to lock (the pad lock icon will open if set to unlock)
Toggle Layer Printability - allows users to exclude the layer from being printed
The video tutorial can be viewed by clicking here!