In Project Settings > Locations, you have the option to set the Spatial Type to 'On Drawing' when adding Project Location Levels.
With the Spatial Type: Drawing1 selected, clicking the '+' Add Level button will show Add Level options for your Drawing Level.
In the 'Add Level' panel, add a Level Name and select either 'None' or 'On Drawing' under 'Spatial Type'.
With 'Level Name' and 'Spatial Type' filled out, click the 'Save' button.
Last Updated: Dec-10-23