Custom Masters are delivered in a custom Stencil. Stencils can be deployed individually or along with a custom Template that they are docked with. A Visio installation creates a
<Documents>\My Shapes folder. If Visio Stencils are placed into this folder, or in a sub-folder, then they will become available in More Shapes | My Shapes in the Visio UI.
Alternatively, a folder path, or multiple folder paths separated by semicolons, can be entered into the Stencils option of the File Locations dialog opened from the Visio Options | Advanced panel, as shown in the following screenshot:
Similarly, the Templates ...