Motzei shabbos yom tov

Can the Rav please clarify
-the correct way to light or not light candles
-and the way to say havdala during Kiddush when there is a yom tov on motzei shabbos.

Does yaknahaz apply?

We follow the way of the Rav and make the bracha on electricity on erev shabbos and light candles.
Thank you

Motzei Yom tov, we say havdalah on wine or grape juice only, unless motzei yom tov and Motzei Shabbat coincide then ner and bsamim are added.

If I have company on the second night of yom tov, motzei shabbos, and they light candles-
Do we do yaknehaz, and make a bracha on the candles that are there?

No, they should not be lighting candles on the second night.

I understand. If they do it anyways. And there are newly lit candles in the room, do we make the bracha on the candles.