Apply changes to all selected tasks

Hello,

Is there a simple way to update/apply changes to all selected tasks when changing one.
For example, if I select 2 tasks and then I drag first task to left for one day, I want that second one moves for one day to left too.
Any universal function to catch action/change and value? So action would be “drag move” to left/right and value would be 1 day.

Thank you,
Mark

Hello,
please check this article
docs.dhtmlx.com/gantt/desktop__d … htheparent