Hi,
If its the type 3 aug like the EM3 or EM7 pet focus that is available from Void F and up, it means you have to do all 4 themes and then Discord to reach that level. If you did Earth theme for the J5 mercs you should be in Void B. While SOD progression will give access to a higher void as you complete each theme (first 4 in any order then Discord). The higher voids would have more items showing up on the vendor in the Void. So if you did three themes you would only see Void D and all items unlocked to that point in time on the vendor.
I know there is also a type 3 aug with EM8 pet focus but requires you to do some raid missions to get. While the EM3 pet focus aug degrades above level 85 iirc.
By the way if your a gold account there is a pet focus ear item on the loyalty vendor with EM4. I used it on my necro when he was around 85 or 86.
Edit: Forgot to say that the themes have group missions which require 3 players to request-mercs do count in most group missions incl SOD. So two real players and one merc should make it possible. Though some of the Discord/Korafax group missions (for Void F access) are challenging for two sub 90 players/boxing it w/merc imho.
Good Luck.
Edited, Oct 19th 2013 5:25pm by hexeez