Locking and Unlocking Layers
You can lock a selected layer to protect any objects on it from being changed. Once locked, you can unlock the layer to make changes to any objects on it.
- Select a layer.
- Do one of the following:
|‣||Click the Lock icon of a layer.|
|‣||Select Layer > Lock/Unlock Layers.|
|‣||In the Layer toolbar, click the Lock/Unlock Layers button.|
|‣||Press Alt + L.|