The LMF tab provides controls for the low mid frequency band of the EQ. This band is a peak EQ.
The Frequency control lets you set the center frequency for the peak low mid frequency band.
The Gain control lets you boost or attenuate the corresponding frequencies for the low mid frequency band.
The Q control changes the width of the low mid peak EQ band. Higher Q values represent narrower bandwidths. Lower Q values represent wider bandwidths.