Korafax Access
You must either do all Group Progression or all Raid Progression. You cannot mix them together. What this means is you need to complete one of these two achievements to zone into Korafax. Not everyone has to able to request all the group missions or raids, you just need to complete the tasks on one of these two achievements. You will still need 1 person who can request them, which requires additional questing.

Void Access
You’ll gain access to an additional Void each time you complete Progression (either Group or Raid) for a theme in the same manner that you progress in Korafax Access above.

Unconfirmed:
You can mix Raid Progression and Group Progression from these two achievements to gain access to the Void. For example, you can do Group Progression in one theme, and Raid Progression in another to move your Void Access up two levels.

Tower of Discord Access
To be able to access Tower of Discord you must either complete the 3 Korafax Raids or loot Tower Key. Tower Keys drop from the 3 Korafax raids and also from bosses in Discord Tower itself (normal version only, hard mode doesn’t drop them).  What this means is you need to complete one of these two achievements to zone into Discord Tower.

Unconfirmed: The Requester for a Discord Tower Raid will have to have done the 3 Korafax Raids and loot a Tower Key

If not flagged via either of these methods, you can piggy into Discord Tower at the ratio of 5 flagged for 1 unflagged.

Note: If you are on a server where Korafax and Discord Tower is unlocked without doing progression, then you won’t get access to Void F unless you have done all prior themes.

Request Requirements in this guide assumes you are going through all the pre-requirements to request each task leading up to being able to request a raid, and didn’t get anything requested for you from someone else in the group progression. It may be possible to request some of the raids with only group missions done.