For the clutch cable I have the metal clamp with the rubber inside it that sort of seals the clutch cable so the can can blow the oil thru its tube into it.
My method for doing the clutch on my UCE is as follows:
1. Using a large adjustable wrench adjusted to fit the clutch lever on the left side side cover I turn the lever counter clockwise. This allows me to slide the end of the cable out of the sheet metal clip.
At the left hand grip I pull the cable away from the grip housing. This disengages the metal end from the housing allowing it to drop down. Rotating the cable towards the front of the bike will turn the cable and its retaining cross pin so that both can be pulled out of the bottom of the lever. There is a thin plastic piece covering part of this pin and it needs to be in the assembly so don't lose it.
With the cable free it is easy to pull the inner cable out far enough so the cross pin is sticking out one end of the metal oiler attachment and the outer sheath is just starting to enter the attachments split rubber sleeve.
With everything set up this way, I screw down the two thumb screws to tighten the rubber around the cable.
Then its pretty easy to just stick the can's tube into the hole and push the button.
My oiler leaks a lot when I do this so I cover the whole thing with an old rag.
While squirting the oil in, it also helps to push the rubber bellows at the lower end of the clutch cable off of the threaded rod. That allows the oil/propellent to blow thru the cable freely.
See Singhg5's video for the throttle cable.