Hi,
We are trying to configure drag-drop column in ganttchart which is there in your "advanced" example.
Changes made by us,
added new column with below code :
{ xtype : 'dragdropcolumn' }
Kindly refer attached document for use cases.
Please let us know if need more information or if we are missing anything.
Bryntum Version: 6.0.8
Sencha Version: 6.6.0
Browser: Any