It would be nice to modify volume in smaller increments. e.g if you switch to headphones a 5% change can be too much, but when using speakers it might be find dependant on model something like shift+volup/down, would be ideal, but once the functionality is exposed the particular key bindings are not that important. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
You can! :) Click on the configure button in the popup, which will open the settings window where you can configure the increment.