The Halls of Origination

You+ are able to skip this quest and the scenario on alts by accepting the quest and talking to Magni before going into the dungeon. It will auto-complete the objectives and you can get To Ramkahen to continue the story.

When you get to the part about the lift console, here's what you have to do:

1. 
   
2. When you enter the chamber, the console you want is the first one on your left (at least, it was for me - may be random).
3. 
   
4. Approach that console and the objective will update. Now you need to power up the console.
5. 
   
6. At the other end of the room, you'll see a console that is getting two beams of energy/light from the pillars near it. Go to that one.
7. 
   
8. At the bottom of each pillar is a small console. Click the console to re-route the beam for that pillar.
9. 
   
10. Repeat Step 4 for each pillar, re-routing the beams until you get them both pointed at the lift console.
11. 
    

The beams redirect at 90-degree angles, and the overall puzzle is very similar to the ones in Legion where you had to move beams around to activate Leylines. You probably want to work your way back to the lift console (instead of doing one beam all the way, then the other... do both sides simultaneously), since when you do the last pillar the boss (Sun Prophet Tenhamen) will come out of the doors on the end where the beams originally were.

Once you've defeated Tenhamen, go back the way you came in and return to the lift to proceed.

Hope that helps someone!

If you are too slow after a while MOTHER intervenes and does it for you (i had a toddler have a meltdown in the middle of stage 6 and had to go AFK).

Takes quite a bit of time, I'd say at least 5 minutes but hey, if you don't feel like doing it yourself at least know you have MOTHER to bail you out :) You'll know it will happen once Magni says something along the lines of "why do these things have to be so convoluted".