Hi @sagars,
Its whenever we adds item in multifield it will be added at bottom only. In order to make it on top We should try to overlay base component and need to add logic to JS for this.
You can overlay multifield component /libs/granite/ui/components/foundation/form/multifield/render.jsp and add custom js logic to add on top. While solution provided by @Nupur_Jain Should work.
Try and let us know the magic after adding js 🙂