No guide to creating visual sets will be up any time soon so I will drop a short how-to here:
to modify an existing visual set resource, open the resource manager, filter out all non-visual sets by right clicking visual set icon (two teapots), and double click the visual set you wish to edit. A dialog named "Character Visualset" should open.
Now you can add visuals to this visual set resource by selecting a visual in the resource manager (the resource with the single teapot icon) and clicking the "Add" button in the visual set editor dialog.
