Heres my workaround for that.

On browser, goto beta.listr.lol

You can manage your lists there, so you can make one called Favorites, or Coworkers, or Neighbors, Church, etc.

You'll need the npubs for each user, which may be easiest to search/lookup using nostr.band

once youve populated your list, be sure to save.

Then go back to Amethyst, and your list should be available to filter events on from the top where it says All Follows