ILLUSTRATOR OVERPRINT (different question)

[boom]

In my project I use 2 colors the black and panton (spot),I know that the black color set in all rips always to overprint the all other colors, but I don't know if : when I set individually for many objects that the second color (the lighter color - panton -spot orange) that relies on a black's shade to overprint the shade of the black (grey) to get more colors in the printing - Does it mean that the second color panton will ripped with overprinting setting on the whole project, in all Illustrator & Indesign elements although I didn't give these settings for the all elements.
thanks!

[prepress_goddess]

use your attributes pallete to assign what overprints by selecting the individual objects and assigning overprint stroke and/or fill