Lock and hide layers
When you lock a layer, you prevent any object on that layer from being selected. Hiding a layer makes all the objects on that layer invisible, and therefore also prevents them from being selected or changed.
To lock a layer
In the Layers panel, click the Lock icon next to the name.
To unlock a layer, click the icon.
To lock or unlock multiple layers at once, drag the mouse vertically across the Lock or Unlock.
To hide or display a layer
In the Layers panel, click the Visibility icon .
If you press ALT+click on a Lock icon , Microsoft Expression Design locks all the layers except the layer you clicked, unless all the other layers are currently locked, in which case pressing ALT+click unlocks them all.
Similarly, you can toggle the visibility state of all the layers except one (making them all visible or all hidden) by pressing ALT+click on the layer's Visibility icon .
To show or hide multiple layers at once, drag the mouse vertically across the Visibility icon .