If you add a column proportions or column means test to a table, you can optionally display on the table a column showing the smallest p value found for any of the pairs of columns tested in each row of the test, using the ShowMinPVal property:

This adds a new column with the name MinPVal to the table. Each row of this column displays the lowest p value found for any pair of columns tested in the row. If the table has more than two columns, the column IDs for the pair of columns that generated the lowest p value are also displayed.

The minimum p value column is not valid, and so is not displayed, on a table with any nesting or concatenation in the top axis.