https://wccftech.com/2021-macbook-pro-function-row-keys-brings-new-shortcuts/

The removal of the Touch Bar might not be appreciated by many previous-generation MacBook Pro owners that could easily customize shortcuts based on their preferences, but with the re-introduction of the physical function key row, Apple has attempted to ease productivity for you as much as it can. The company has done this by adding shortcuts to these function row keys and depending on the key you press, you can bring up various commands.

The function row keys do not just boast the same size as the other keys, but they also bring new shortcuts such as Spotlight, Siri, Dictation, and Do Not Disturb. The usual shortcuts for display brightness, media playback, volume, and more have been retained, along with a new Touch ID ring that provides a more tactile feel to users when they use it to gain access to their MacBook Pro.