Main Workspace (Motion Mapping)
When in the Motion Mapping Mode, the Main Workspace displays the current Character file Skeleton Mapping, as well as the current Motion Mapping file, if loaded.
If no Motion Mapping file is loaded, the Golaem Character Maker will show red boxes around limbs and their effectors, which represent the character's animation Channels.
Character Maker Main Workspace in Motion Mapping mode
Right-click on a Channel red box to edit its Motion Mapping:
Motion Mapping Dialog
Keep in mind that a reference Motion must be loaded in the Motion Mapping Panel in order for the Motion Mapping dialog to be available.
The Motion Mapping dialog options are explained here.