Which PowerShell cmdlet should a Citrix Engineer use to automatically turn on logged off virtual desktops during peak hours?

Set-BrokerDesktopGroup exposes power management parameters such as AutomaticPowerOnForAssigned, PeakBufferSizePercent, and peak-hour pool size settings that instruct the Citrix Broker Service to power on logged-off machines when peak periods start, making it the correct cmdlet for automating desktop availability during peak hours.

Set-BrokerMachineCatalog modifies properties of a machine catalog such as its description or provisioning scheme settings, and does not control power management schedules or peak-hour power-on behavior.

Set-BrokerPowerTimeScheme defines the time windows and target pool sizes for peak and off-peak periods, but it does not by itself enable the automatic power-on behavior - that is governed by the Delivery Group configuration via Set-BrokerDesktopGroup.

Set-BrokerHostingPowerAction issues an immediate one-time power action against a single specific machine and cannot be used to configure automated, schedule-driven power-on behavior across a Delivery Group.