The answer
Ni Savev should be chanted in the presence of a bishop or a patriarch but Pi Ehmot Ghar should be chanted throughout the year. Some deacons prefer also to chant Ni Savev in the Feasts of Nativity, Epiphany, and Resurrection and I personally don't see anything wrong in this rite.Answered by His Eminence Metropolitan Youssef (opens in a new tab)