Taking out nameless mookssentries and bodyguardsguards is honestly best modelled as a single Overcome roll, people for whom it'swhen they're not worth spending the timezooming in on for a prolonged fight,full Conflict scene. The single sentry on the balcony is honestly best modelledsimply not worth more narrative time than a tricky-to-climb wall and thus gets about as much mechanical attention. Sometimes a single Overcome roll handles multiple guards at once: they are merely obstacles to be overcomethe two guards posted at the entranceway may represent a single obstacle together. If there's a series of them, which is often the caseguards worth focusing on, model itgetting past the guards as a Challenge to get past: individual rolls in the Challenge might be about individual or entire groups of guards independing on how much ground the areaprotagonists cover during that Challenge, and some may simply be about getting into a new place unnoticed.
My group has used this multiple times and found it helped us maintain both a good pace and tension, where we found dipping into conflicts or other more involved mechanics would be a drag. The single sentry on the balcony is simply not worth more narrative time than a tricky-to-climb wall and thus gets about as much mechanical attention.