Make a bar plot.
Open Axis dialog and go to tick labels tab. Enable table and set numbers of Rows to 2. Set Bottom 1 and Bottom 2 axis’s display. Click OK.
Double click to open Bottom 2 axis dialog and go to tick labels tab.
Go to Format subtab. Uncheck Auto box. Set Direction to Vertical. Click Apply.
==> Auto box is checked. Text direction is not changed.