[quote="NickD, post:6, topic:332059"]
Actually, I believe that all bishops, priests, and transitional deacons must say each office of the Divine Office. Permanent deacons say some of it...as determined by himself or by his Ordinary, I think. And then consecrated religious say the LOTH according to the rules of their orders, unless they are ordained, and then the rules for priests take precedence
Well, yes and no, and no and yes :D
All Latin-rite priests and transitional deacons have the obligation to pray the entire Liturgy of the Hours, promising to do so at their ordination. However, what this actually means is different to what it might seem. This "entire" LOTH comprises: the Office of Readings, morning prayer (lauds), oneof the three hours during the day (terce, sext and none), evening prayer (vespers) and night prayer (compline). In contrast some orders, such as the Bendictines for example, have their own, more extensive version which basically involves prayer throughout the day (and night) and, as far as I know, don't draw a distinction between ordained and non-ordained members - they're members on their order first an foremost.