Currently EK has an "official" list for keyfinder.cfg. This can be updated by clicking Help > Check for Updates.
There needs to be a setting in the keyfinder.ini settings file where a user can specify their own config file and it will add on to the "official" keyfinder.cfg file.
The reason being that when a user clicks the update menu and a new keyfinder.cfg is downloaded then the user's settings are overwritten and they lose them if they had any.
Now obviously the preferred method would be that the community updates the cfg file but this feature was requested and I can see some merit in letting a user having their own unofficial keyfinder.cfg file that works alongside the official keyfinder.cfg file.
See original request: