You can create your own symbols from a single vector object, a group of vector objects, or a composite object. Text is converted to a path when an object is saved as a symbol.
Save your new symbols in the My Symbols folder so that they are available in the Symbol Library palette. If you prefer to create a new folder for your symbols, you can add the path to the folder in the Symbol Library Options dialog box so that you can see the symbols in the Symbol Library palette.
Adding one or more keywords will allow your symbol to be found easily by the search function.
You can use the Verify Name button to check that the name you have entered has not already been used for another symbol.
You can create your own sub-categories inside of the My Symbols folder by navigating to ~/Documents/Canvas X Draw/My Symbols and creating a new folder. You can then press Refresh from within the Symbol Palette drop-down menu, and your new folder will appear under My Symbols | [Your New Sub-Category].