I would like to be able to set objects which are colored with 0% color value(halftone) to overprint.

I need this function for example to color objects with the color varnish and to get correct color separations. Because everything that is colored with varnish should overprint.

Until now I correct this in the PDF I export from Indesign. But it would be desirable if this setting could already be made in Indesign.