Sonos Support

Can anyone tell me how much Sonos support there is? Does it only support the media player component features of:

turn_off, volume_up, volume_down, media_play_pause, media_play, media_pause, media_next_track or does it support additional sonos based features like grouping and ungrouping speakers?

I’m currently using an ISY994 as well as the sonos http api (which runs on rasperri pi)… but my control of the sonos only works well when it is NOT grouped, or when the grouping is done FROM the room I’m trying to control (which is “Living Room”). If I have music in the “Bedroom” and then add the Living Room to the group, now my ISY can’t really control the one room alone (in terms of volume).

Thanks in advance.