The draft documentation is here http://docs.daz3d.com/doku.php/public/software/dazstudio/4/userguide/creating_content/start ERC freeze requires that you have the changes you want to make in place, then you go to the property Editor and open the option menu (click the little menu button in the top corner, or right-click the tab) and select ERC Freeze.... In the dialogue, pick your figure, pick the node with the controller you want to govern the settings, and pick the property you want to control the settings (presumably your morph), then make sure the changes you want linked to the morph are ticked in the Freeze properties list and click Accept.