Put in the directory edrawsvg/config/customshapes your custom shape catalog files generated with drawsvg tool .
Declare them in the index.json file like this:
[ {"index":1,"title":"Samples 1","file":"shape-samples1.svg"}, {"index":2,"title":"Samples 2","file":"shape-samples2.svg"} ]
The file is in JSON format.
You can define up to 4 catalogs, index must be between 1 and 4.