To create new layers, click on the Add New Layer icon in the Layer Properties Management dialog. Now a new layer is created with default settings and the name 'Layer n'. New layers can only be created if all the layers are visible.
It is also possible to create standard layer names in ARCHLine.XP. Check Protocol for Layer Naming at the bottom of the Layer Property Management dialog, and then click on the Add New Layer icon. A new dialog box opens in which you can enter the layer names using letters.