Properties - Design Symbols Category

Design Symbol Section

Lock Layer

Locks the layer/level on which the design symbols are drawn. Since deleting a design symbol, dropping its complex status in MicroStation, or exploding the block in AutoCAD results in a loss of the data associated with the corresponding parking design, the layer/level on which the design symbols are drawn is locked by default. To unlock the layer/level, clear the Lock Layer check box.

Layer

Sets the layer/level on which the design symbols will be drawn.