The Draftsman – Defaults page of the Preferences dialog allows the default values and settings to be configured for drawing and objects placed in a Draftsman document. These default settings can be overridden in the Draftsman Properties panel once an object or view has been placed in a document.
The Draftsman - Defaults page is accessed by clicking Defaults under the Draftsman folder in the main Preferences dialog (accessed by clicking in the top right corner of the workspace).
All primitive default values are saved in the ADVPCB.DFT file. This file is located in the \Users\<ProfileName>\AppData\Roaming\Altium\Altium Designer <GUID> folder of the installation.
To view and edit the settings and options for each primitive, click on the desired entry in the Primitive List. Information for each primitive can be found at the following links: