: For even more precise help, from the purple charger, go a short distance NNW
: onto the platform that you lowered (red on map). From there, it is a
: bluish square when you face SE.
: I'm still looking for the second one.
The one you found is the one in the east wing that I mentioned. The other one is in the analogous narrow corridor that cuts across the south wing. It is on the left side of the south wing and is hidden in the support column as you face NW. It is made visible by tabbing the column and is also bluish.
Hope that helps.