Try selecting "Installation Drawings" ... that should give you some "drafting paper" at the top of the screen, you should then be able to drag/drop walls/doors etc to design the room layout then add sockets etc (default height for sockets is 200mm .. the man from delmonte say non!).
Which bit did you download Telectrix? I downloaded the wrong bit first. I then found that I needed to download and install the SEE Electrical Building (FREE) bit.
I could then see bits.
It looks like a Microsoft Office based application, a bit like Visio...
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