It is right there as per your screen shot.
You have to un-tick the "Use Archicad Sun Position' box to set it manually or it takes the settings from Archicad 3D Projection Settings.
I think there may be a bug where the date and time is adjustable when use Archicad settings is ticked but as soon as you un-tick and then tick again the box they become inactive.
As for the screen resolution that only applies when you have the 'Size' set to 'Print (Portrait or Landscape)'.
It is not applicable for 'Screen' or 'Size to 3D window'
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11