In Toolspace, on the Settings tab, right-click the drawing name at the top of the collection, and click Edit Drawing Settings.
In the Drawing Settings dialog box, click the Object Layers tab.
For each object type, click in the Layer column to display the Layer Selection dialog box.
In the Select Layer dialog box, select the layer for that object type and click OK.
To add a modifier to the layer name, select Prefix or Suffix in the Modifier column and then enter the text string for the modifier in the Value column.
Tip: To include the object name in the layer prefix or suffix, enter an asterisk in the Value column.