Trying to use map facility in Scheduler

I can’t work out how to do this.
It might help if I could find the documentation.
The link (extensions.joomla.org/extensions … dars/10363
doesn’t work.
I suspect this extension will work well when I can sort it out, but I’m struggling, since I’m needing to use guesswork.
I also can’t seem to access any way of adding any more than an event title in the back end, because when I edit an event (doubleclick in Events Administration) it only allows me to edit the title itself.
It could VERY WELL BE that I’m missing something very simple.

S

PS. I’m using Joomla 2.5