How were the Yetzikah and the Meshichah performed?
Rashi: Moshe first poured oil on Aharon's head; then he placed oil between his eye-lashes and joined it to them with his finger.
Why does the Torah not mention the anointing of Aharon's sons, which he was commanded to do in Pikudei, Sh'mos 40:15?
Ramban #1 and Moshav Zekenim (in Pasuk 10) #1: It can be taken for granted that he did so. 1
Ramban #2 and Moshav Zekenim (on Pasuk 10) #2: It does not record it because Moshe was commanded to sprinkle the anointing oil on them and on their clothes, but not to anoint them. 2
Ramban and Moshav Zekenim: Seeing as the Torah records in Pasuk 13 that Moshe did like he was commanded. See also Tetzaveh, Sh'mos 28:41.