To add a small bit:

While we can define exterior lighting loads (in W/ft^2... how
intuitive!) in either SD or DD wizards, I only ever do so if I must stay
out of detailed edit for some reason. In detailed, as described below,
you can (1) enter the fully connected load as you might tally it from
the design, in kW, and (2) you may assign a variety of scheduling to
accurately model the consumption (photocell controls/timers/fractional
loads/etc...).

Related Question/Food for thought: If I'm not mistaken, there's nothing
in the SD wizard screens you can't do in the DD wizards, which offer
more flexibility (>2 systems/multiple shells)... Am I missing some
compelling reason to start a project in SD vs. DD wizards?

NICK CATON, E.I.T.