Adding LUTS to Log Procesing

I have searched and come up with nothing. Any help would be appreciated.
How do I add (or can I) additional LUTS to the Log Processing option. Where do the LUTS reside?

Thanks

Not 100% sure to understand your question.

To use LUTs within FCPX you need a plugin:

- Color Finale
- LUT utility (included in color finale but also separately)
- LUT Buddy

There might be others. Color Finale is hold in high esteem by the majority of the fcp.co community

I'm referring to the built in option of log processing, as to not have to add it to each clip.

Sadly, we cannot add to that list. we're stuck with just those ones for now.

However, You can make a preset grade and just add that when you get to a timeline, not perfect, but it works.

Or you can get a LUT Utility like manoucho said and add as many LUTs as you want.

The new mLUT from MotoinVFX should be added to that list.