In the Probit plot visualization, you cannot add more columns to x-axis, only 1 is possible today. In "Trellis" and "Color by" you have an option (Column names), but becuase there is no option to pick more columns in the x-axis, you cannot leverage these. I would like to suggest to extend the functionality of Probit plot to have possibility to pick more columns on x-axis.
My plan was to add a probit plot for 3 columns to be compatible with Box plot visual (see attachment), eg. in Trellis, but it is not possible at the moment. At the moment, you would need to create 3 different Probit plots with different column as x-axis selection