The FFT Graph Options dialog allows you to control how your data are plotted.

Title:

You can add and change the title text and its color as well as remove the title completely. The title will be placed at the top of the graph.

Legend:

Check this option to display a legend using Data Column labels in the graph window.

Peak Frequency:

If this option is checked, the graph will show the frequency component with the largest amplitude.

Grid:

Major and Minor Tick Style: select line style for grid lines
Major and Minor Tick Color: select grid line color

FFT Definition:

Base Column: In most cases, only timed data will be used and will be the first column of the data set. Select the column from the pull-down menu.

Data Column: Choose which columns will be analyzed and plotted.

Frequency Axis Options/Amplitude Axis Options:  Use this option to change the label or axis scaling for the frequency axis and/or the amplitude axis. It is also possible to change the scales on the graph itself by clicking on the left and right limits on the X-axis or the top and bottom limits of the Y-axis. You can also use the Autoscale button in the toolbar.