Class One. Page 40-1. There are seven paths of Avoda, but they all must end in a candle that produces light to shine to the world. Aharon whose path is Chessed finds commonality in the “path” and the “goal” making his work easier. This is how it is by all of our Rabbeiim.
Class Two. Page 41-3. There are different types of Yahrtzaits and different types of Ohalim [it all depends on how the Tzadik lived]. The Previous Rebbe lived with Simcha, his Ohel and Yahrtzait reflect this.