Hi,
To Restrict drag and drop in the kanban view in Odoo10, 11 and 12, you can use this free module from the store: https://apps.odoo.com/apps/modules/11.0/kanban_draggable/
To disable drag drop record between columns add:
disable_drag_drop_record="true" into the <kanban> tag.
To disable drag drop and sorting records add :
disable_sort_record="true" into the <kanban> tag.
To disable sorting columns add :
disable_sort_column="true" into the <kanban> tag.
Example:
<kanban disable_sort_column='true' disable_sort_record='true' disable_drag_drop_record='true'>
...
...
</kanban>
From odoo13, we have an option by default to do this. Set records_draggable to False.
``records_draggable``
whether it should be possible to drag records when kanban is grouped. Default: true.
See the Video Explaining the same: How to Disable Drag and Drop in Odoo Kanban View
Thanks