The information in this article applies to:
When selecting an item I receive this message:
The layer is locked. Items cannot be createdor modified on locked layers. Do you want to unlock the layer?
What does this mean?
Every item in Chief Architect is assigned a layer. For example base cabinets are on the 'Cabinets, Base' layer. When a layer has been locked it prevents objects on that layer from being selected. New objects cannot be drawn on a locked layer, either. If you lock a layer and then attempt to draw a new object on that layer, a message box will ask you to unlock the layer.
Layers with objects that you need to see as a reference while working, but not select, are good candidates for locking. For example: