Drawing lines, fine tuning.

I’ve been toying around with the search function and the line renderer, but it seems it doesn’t works as I was expecting…

I have several buttons in my scene. Pressing those buttons make a imported 3D model do something, trigger some animations, etc.
As each button affect a determined section of the model, I want to create some kind of line which starts on the button and ends in the specific section of the model, maybe outlining the section, because why not.
But the line renderer doesn’t allow me to specify exactly the points where I want the line to start and end, only general (EDIT: “general” = “world”) coordinates which are quite painful to correct, not being able to copy/paste them from other object, or use the move tool to move them around.

So, there’s any “better” way to place those informative lines? I am missing something in the Line Renderer magic?
Thanks.

Again, I’ll answer myself, as I found the answer toying around.

12566-linerenderer.png

If you place your mouse over any of the element’s coordinates of the Line Renderer (i.e. you put your mouse over the Element 0’s X coordinate, which is 2000), the mouse will change and Unity will let you move left and right while keeping pressed the left mouse button to change this coordinate.

So, to “fine tune”, for instance, the Element 2 in my Line Renderer, I have to click over each one of its three components and, while keeping the button clicked, move the mouse left and right to get the exact value.