This will allow developers to target a specific element where they want to render the popups, similar to the Grid POPUP_CONTAINER. This will help render the popup at Grid container level which will display then inside the FullScreen API.

This is regarding the row and column reordering as they append to the body.

Similar to the HintSettings appendTo property:

https://www.telerik.com/kendo-angular-ui/components/utils/api/HintSettings/