Assegnare Campioni Colore

I think Monika might be interpreting what you want the right way. If you want those solid colors to be tints of the original screen. The only way I know to do that is to use solid inks and not process mix.

You can use Edit Colors > Recolor Artwork to convert all colors to spot colors. Unfortunately all your objects that are using opacity won't be a screen of the ink they are converted to and instead will retain their opacity percentage.

Which if you are printing through a RIP device, will give you the same appearance, so I don't know if it's an issue when making plates for CMYK.

But if you need the data specifically to be a screen of a base ink like a pantone or cyan plate, then you'll have to do it all manually. But the appearance is the same regardless of which technique you use. So you can see below, each of the squares match. But I'm using a pantone ink with a screen of that ink on the far right square.

On the example below, these are the same Cyan value in a CMYK mix with opacity reduced to 30%. It looks the same as the ink above set to 30% screen.

If there was an object behind the squares with opacity this would obviously affect your separations and plates very differently. But if they are over a white background and not overlapping elements, it would RIP the same way.

Hope that helps.

Please explain what you want to create.

I don't understand what the screenshot has to do with your question.