Headlight lense removed, now how to get projector bowl out?

[Tymatk]

Lucky i was prepared.

Bought an extra headlight on Ebay for cheap as this guy was selling 1 only, even worse it's on the opposite side that i need.

Still, i pulled it apart anyway and was so happy to find out that i can swap the projector bowl over to the one that got burnt out, hooray!!! (See side to side pic comparison, excuse my shitty phone camera, the other bowl should be really nice and shiny)

What is that lever thing? Where should i set it? there are only 2 setting anyway.

Ok so while i'm at it, do you guy think it's worth getting the Angel/Evil eyes done? Where do i wire it?
Don't forget this is the euro X5, right hand drive and come with Park Light already. I have Navcoder so i can activate the day time driving light on.
Is it worth polish the inner part of the clear plastic cover? Should i get some more of that goo stuffs when i put the headlight parts back together?

Cheers