In the Features module, there are bundles, and bundles have their own assignment method configurations. The purpose of bundles inside Features is to provide an automatic assignment of configuration that can be grouped into exported modules:

A bundle has a human display name and machine name. The bundle's machine name will be prefixed on all feature modules generated under this bundle. You also can specify the bundle to act as an installation profile. The features UI was heavily used in Drupal 7 to construct distributions and spawn the concept of the bundle functionality.

Assignment methods can be rearranged and configured to your liking.