The Office of the Dead split into three hours?

[dbranch]

I have Angelus Press’s Little Office + Office of the Dead. The latter is split into three hours. Must they be prayed at separate times, and must all three hours be prayed?

 

[Fauken]

Must they be prayed at separate times, and must all three hours be prayed?

If it’s anything like the LOTH (assuming EF LOTH), they’ll be prayed at the conclusion of the hour they’re for (Office of the Dead lauds after lauds, etc.).