REW does more than merely measure; it can also suggest parametric EQ filters to tame the peaks & dips that it measured. These filters have 3 parameters: centre frequency (where the peak or dip is centered at), boost/cut (how many dB to bring down a peak or boost a dip) and Q (the width of the filter: is the peak a sharp needle or broad hill).

REW can suggest generic parameters for the PEQ filters. However, if you have a device that is supported by REW (like the 976), then REW will spit out filter parameters specifically with the 976 in mind. Things like the amount of boost/cut or the number of filters per channel will be based on the 976's capabilities. As Ben said, you can take these parameters and dial them right into the 976.

To get an idea of how PEQ parameters vary by device, take a look at the following link:

https://www.roomeqwizard.com/help/help_en-GB/html/equaliser.html#top