If I try to move/drag/drop some file into the box or click into the box, it should ask about the path and after providing path the files should be uploaded and below the box the files should be shown with editable and delete function.

I suggest you allow drag and drop columns of Scheduler when it is grouped

In my latest chrome version kendo drag and drop not working but in firefox it is working fine

Add the functionality to connect a draggable widget to a sortable, similarly to how two sortables can be connected with the "connectWith" option.

See the jQuery UI draggable + sortable feature: http://jqueryui.com/draggable/#sortable 

How can I get the order of the nodes in the Treeview control after drag and drop.