For 1 light so it on the new scheduler page.
Instructions:. (hope easy to follow)
1) go to scheduler page
2) click add new event (bottom right of screen)
3) name event. For a light I would do Lights.<description of light>.On
(The "Lights." will put it in the group for lights)
4) click on the clock icon on the end of your new event
5) in pull down menu select "custom script"
6) This is where your code could differ.
For a light to always turn on:
@Solartimes.Sunset > @Solartimes.Sunrise (this will turn a light back on even if someone turns it off)
For a light to turn on once
@Solartimes.Sunset
7) go to modules (I think that's the wording between code>xxx>script)
select your light
9) go to script and from pull down select "turn on"
10) repeat all steps for a new event to turn light off.
Hope this helps. Gene has a good code example under developer docs of his website too.