This item is in the bottom right hand side of the RIP Interface.

Scaleable up and down. By sliding the white button along the bar to the right, makes the window bigger, and to the left makes it smaller.

The columns are still fully editable as before, using the RIP Preferences: View list to hide or show, as well as being able to rearrange the order of the columns.

screen-shot-2017-11-08-at-12-11-45