I utilize Q2 Central to enable or disable a feature at the group level. For instance, we have a group that consists of credit union employees that test a new feature before we enable for the entire userbase. Hope this helps.

Bradley's answer is excellent, a bit more color. On top of being able to turn on or off extensions at the group level. You can also use wedge address configurations to turn on and off features within a feature if you write it in the code during development time and then control that per environment. You can control this in the developer portal.