Select Tools/Plot data in the main menu

By default, the complete raw data, i.e.ย all spectra, are displayed on the same plot:

Select single to plot each spectrum separately,

Use the slider in order to change the range of \(m/z\) values. For instance, set \(x_{\rm min}=200\) and \(x_{\rm range}=300\) if you want to display spectra between \(m/z=200\) and \(m/z=500\).