Add presets to LR Classic

"I have added some more [.lrtemplate presets] to Adobe/Camera Raw/Settings/ folder ... but i cannot see the Library folder in the dialogue (Catalina 10.15.1) to navigate through to the 'settings' folder to perhaps select and import my presets."

Two options:

1. Use Finder to move the .lrtemplate presets to your Desktop. Then in LR do Presets Panel > + > Import Presets and navigate to your Desktop.

2. Do Presets Panel > + > Import Presets. Then in the open-file window, type the Finder magic  keyboard shortcut Cmd + Shift + . to show hidden files. Then navigate to your hidden Library folder.

In both options, Import Presets will convert the old-format .lrtemplate presets to new-format .xmp presets.

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Old .lrtemplate instead of xmp

see:

https://blog.thomasfitzgeraldphotography.com/blog/2018/4/managing-lightroom-presets-in-lightroom-classic-73-or-later

and 

https://www.youtube.com/watch?v=mYx899_tNP8

And while asking obvious questions. RAW correct? Many presets RAW only. If JPEG, have you changed the defaults to allow for partially comparable presets?

https://store.thomasfitzgeraldphotography.com/2018/12/14/an-important-note-about-preset-visibility-in-lightroom-8-1/

And an obvious question to ask just in case. In Lightroom Classic, in the Prests panel, the + symbol, click on it, select Manage, are your missing presets simply not selected to display? Lightroom defaults to just a few.

Have you selected to store presets with catalog lately (bad IMO)

https://www.lightroomqueen.com/store-presets-with-catalog/

I have some presets already in LR classic. I have added some more to Adobe/Camera Raw/Settings/ folder, but i cannot see them upon relaunch in LR

By that, do you mean:

~/Library/Application Support/Adobe/CameraRaw/Settings

but i cannot see the Library folder in the dialogue (Catalina 10.15.1) to navigate through to the 'settings' folder to perhaps select and import my presets.

By that, are you refering to the Library folder in your MAC? And, if so, system library, or user library? And see: https://helpx.adobe.com/x-productkb/global/access-hidden-user-library-files.html

Or the Library module in LRC?

The new shared folder with the ACR presets needs the files to be XMP.

I am guessing that you need to put the LrTemplate files in the old Lightroom preset folder and let LR convert them to XMP files as it puts them into the new shared folder.

Which NUMBER version of Lightroom?

Are these presets XMP files or LrTemplate files?