Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
It appears that you're conflating DesignBuilder-specific EMS code with EnergyPlus EMS code. EnergyPlus does not have builtin EMS loop commands like <ForAllUnoccupiedZones>. You can see the raw EnergyPlus EMS commands available here, while DesignBuilder extends the available commands as described here.