When you say “sharing”, do you mean between 2 different computer systems or 2 different projects on the same computer?
I believe at this point there is no easy way to export a preset and re-import it. It might be possible thru scripting. With version 17, It might be worth it to try exporting/archiving a project (.drp or .dra) and see if these custom settings are saved with a particular project?… but I doubt it… let us know…