To save track labels or your “Scribble Strip” in VSL, simply make the desired changes to the names and save the scene in the "On The Disk" section of the VSL browser.
NOTE: Scribble strip channel name information is ONLY stored in scenes saved to your computer in VSL's On The Disk section. The information will need to be reloaded if you Quit Universal Control or restart your computer for any reason.
If you have existing scenes saved on the mixer and you want to be able to load them from VSL with channel name info, see the following:
To load them you can either load the entire scene from VSL or drag the scene to the Scribble Strip. Dragging directly to the Scribble Strip will load the names only.
See also section 3.5 Loading Scenes and Presets from VSL in the StudioLive Software Library manual: