select a group when dragging over part of the group

I look at this example and found you have to drag over all group children to select that group.

https://daybrush.com/moveable/storybook/?path=/story/combination-with-other-components--components-selecto-with-group-ungroup

Is it possible to select the whole group, when we only drag over part of the group?

I tried using groupManager.selectCompletedChilds in onSelect however an infinite loop is triggered