I don't get why this isn't in "Newbie Guides" section.
EDIT: Unlocking HoP F7 is possible when following the Quest series starting with "The back land" (Lv.61).
Unlocking DV F7 involves completing either the aforementioned series or Drakos's Quest series (will be testing soon, or is there someone who could help right now).
Unlocking DV is the paris (amnesia) quest chains + a couple quests further to unlock F7 in that area. I haven't done the HOP f7 quest chain in a very long time so I don't really know the full quest line.