Before "Add to Auto DJ", chapter "Search for associated track" is forgotten.
To delete "Update ReplayGain from Deck Gain: Applies the deck pregain knob value to the detected ReplayGain value for the current track. This is a way to update the ReplayGain value of a track if it has been detected incorrectly. When this option is selected, the pregain value for the deck will be centered so that there is no audible difference in track volume, so this operation is safe to use during performance. "
2.4 manual https://manual.mixxx.org/2.4/en/chapters/library#track-list-context-menu Right-clicking on selected tracks in the track list reveals the context menu: