No apologies for exposing your lack of knowledge and common sense.
Why do you call yourself sparkydude, that implies you're an electrician.
If this is an office environment there is a fair chance the walls are plasterboard in which case just drill a hole in the back of the power compartment and run a flexible conduit upto the spur unit.
So how do you fix the flex conduit to the trunking? Do you wave your harry pottter wand and make a gland appear inside the wall?
Since you are such an expert in the field of electrical installation i will bow to your superiority and experience , NOT,
Yes I am an electrician and i have plenty of common sense and certainly do not suffer from a lack of knowledge i can assure you.
As for how to gland the flexible conduit off into the trunking, the way i would personally do it is to drill a 32mm hole which the gland would fit through , followed by drilling a 20mm hole in a PVC conduit box lid , this would then be affixed to the back of the skirting trunking with self tapping screws and maybe even a dab of silicone to ensure a pefect fit. At the spur end a deep dry lining box would be used which the flexible conduit would be glanded into satisfactorarily .
I do hope this meets with your approval and if not then may one suggest you take a long walk off of a short pier !!