How to limit delete key

how can we restrict a grouping row delete in keyboard. i click the LANE 1 in grid and press delete that LANE 1 will be deleted. how can i protect.

So your lanes are Groups that are selectable and deletable, and you do not want your users to be able to delete them? Just set Group.deletable to false in the Group template(s).

You might also want to set copyable to false.

3 posts were split to a new topic: Restricting the links that the user can draw