StudioLive Software ReferenceManual EN_V6_210220171, section 5.5.1 " Fat Channel Presets"
The manual describes the procedure, but it may help to know that individual channel settings can ONLY be saved in Mix Scenes (section 5.5.4). Individual sounds like "kick phantastico" are stored as Fat Channel Presets. You most likely would not name this preset "Channel 12".