Hello umbraco community,
I have an understanding problem to create a custom grid with properties, how it works? 
Ok, i have read this tutorial to create custom grid editor
with that tutorial it wasn´t really hard to add a new editor, but I cannot find a way to add properties to it (right panel) like a content picker or a custom editor also there is no setting button by default.
I have found solutions to open a config panel with javascript, is it actually the only one solution?
P.S. have found LeBlender but wanna understand it and do it on my own 
This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/71884-custom-grid-editor-with-properties