The moment to switch between Protocol Levels is entirely up to the Dominant; when a sub is in the presence of Dominant Men, be it owned or not owned, the sub will strive to follow the set rules and directions. If the sub is alone, the sub is still in service, and that service consists in the safekeeping of the sub itself for the Sirs to be able to use it to the fullest; therefor, the sub has to protect itself. The sub has to wisely choose when it's the case to switch to Low Protocol, but mostly, in public, a sub by itself should stick to Social Protocol. A good moment to live always in Low Protocol, is when the sub is safely alone in its house, or when with BDSM folk.