Hi Anne,
Things have changed since Dwight originally wrote the LW book. Be sure that you download his free supplement for AC 11 to read about some other changes.
The Sky object has a parameter as shown in the attached screenshot. Changing to 'Quick Method' as shown gives you the parameters mentioned in Dwight's book.
Note that with the new 'realistic sun' option in the LW rendering settings dialog, you are likely to not need the sun object at all (other than Dwight's "under sun" usage - to illuminate the lower surfaces of objects, such as roof soffits, which might otherwise appear much too dark since LightWorks in ArchiCAD does not implement radiosity or global illumination).
Cheers,
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB