Does the Catholic Church have a standard instruction on placing crosses on the altar?

Many oriental rites of Catholic Church have the plain cross signifying the Risen Lord, on their altar, whereas others use the crucifix signifying the Redemption. Of course, these days one sees churches of even oriental rites using the crucifix. My question therefore is: Does the Catholic Church have a standard instruction on placing of crucifix or plain cross on the altar of its churches across the world?