Feature Request – Icon Groups

It would be very useful if we could limit the icons that appear in the Custom Field once setup, so that if we wanted to use either fa-user or fa-users we could tell the option to only allow those two icons.

Of course with only two options there are other ways of doing it, but the usefulness will arise when we want to limit the user to 10 or 20 icons, or only Social Media Icons, etc.

In addition, on the font awesome website, they have their icons organized into groups ( https://fontawesome.io/icons/ ). It would prove useful to have these predefined groups to select from in addition to custom groups.