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.(missing or bad snippet)
If you want to add a new symbol to an existing category under My Symbols, you can simply drag an object from your Canvas X document to the category in the Symbol Library palette. In the Name Symbol dialog box, enter a name or use automatic naming, and enter any keywords you want to add to the symbol.