Multiple x-axes on a single 2D plot in REPORT

[Chris_P_SD]

Anyone know a way to create two x-axes on a single 2D plot in REPORT?   For example, an FFT of speed variation for a torsionally vibrating shaft with nominal speed of 1800 rpm would have orders of 1, 2, 3... corresponding to frequencies (in Hz) of 30, 60, 90...  It would be nice to show both frequency and order as parallel axes, but I'm not seeing an easy way to do this...

Thanks,

Chris

[Chris_P_SD]

Solved this by creating a linear channel with min and max equal to zero.  Used an interval width of desired label location.  Also created a Frequency channel calculated as (mean RPM/60) * Order with the same dx interval as the zero channel.  Added the frequency channel to the 2D plot in the .TDR and selected labels from channel.  The end result works, although not as simple as just adding an additional X-axis...

The screenshot belows shows this for a nominal speed of 2345 rpm.