Custom config for "Create Define-XML spec" function

Good day all,

One of our team members is trying to create the Define.XML spec using p21, and was hoping to reference one of our custom config files. We placed the custom .xml files under the "custom" folder under "config", and this works well when using the validation function. However, when navigating to the create spec function under Define.XML, we cannot see any of the custom configurations in the drop down list. Is it possible to have the create Define spec function point to both the standard configs as well as the custom configs as we've done for the validation piece?

Kind Regards,

Daniel Rolo