Lyd comes with a variety of controls: Play, Pause, Skip tracks, Changing the volume, Mute groups, Adapt the volume of individual speakers, etc.
All this is optimized for the Apple Watch and for a small screen space. Turning the digital crown allows you to change the volume. Tapping the current song title will get you to your music library (Sonos Favorites) and many more options are hidden behind the option button in the lower right side.