For someone who can read the technical data sheet is agood source for answering such questions: https://www.allen-heath.com/media/SQ-6-Technical-Datasheet.pdf
There you can read:
The mixer shall provide the facility to save 300 scenes of the settings of the mixing system and these scenes shall be nameable.
A comprehensive table of ‘Scene Safes’ shall be provided to prevent selected items from being changed from their state when the safe was enabled. A comprehensive scene filter shall be provided per scene to Allow / Block each parameter saved in a scene from being changed as that scene is recalled.
Enough information?
Ah, and yes you can find the same words in the sq-5 data sheet.
