Custom Lens Profile LCP files should be copied to the user's Camera Raw Lens Profiles folder.
For Windows:
C:\Users\(User Name)\AppData\Roaming\Adobe\CameraRaw\LensProfiles\1.0
For Mac:
/Users/(User Name)/Library/Application Support/Adobe/CameraRaw/LensProfiles/1.0
After copying the file to the proper location:
start Lightroom
in the Develop module expand Lens Corrections
Check both Remove Chromatic Aberration and Enable Profile Corrections box
under Make select Sony and then the Model of the lens..
(anyone know how to make my own group under Make?)
Without Lens Profile
Notice the vignetting and the upward curve of the horizon.
With Lens Profile
Automatic correction of those common edge irregularities.