Workspaces And Palettes

Custom lines and line properties
Lines may contain features such as embedded text or hooks at the ends (e.g. ottavas and voltas). "They can be customized once they have been added to the score, and the results saved to a workspace for future use":

Per the statement above about saving results to a workspace for future use, I created my own workspace, then I created a palette, made sure that enable editing was checked. Two examples that i'm trying to modify for future use. I dragged a LINE from The "LINE" Palette to the palette that I created. I added the line to the score and modified it. How do I save it for future use in the new palette. The other example is "TO CODA". I would like to edit it to read "CODA". I can edit it in the score, but, how do I save it in the new palette? I tried to drag the edited item from the score to the new palette with no success.