The data selection in each window is synchronized with the selections in other windows.
For example, if you select a specific peak in the Chromatograms window:
the corresponding line will be selected in the compound table of a linked processing method
the corresponding line will be selected in the Injection Results window
the peak will be shown in the Peak Details window
the calibration curve for the corresponding compound will be shown in the Calibration Curve window
associated UV or MS spectra will be shown in the UV Spectrum and MS Spectrum windows
Vice versa, if you select a different compound in another window, the corresponding peak will be selected in the Chromatograms window.