CmdID / PowerShell / Cmdlets / Add
Add-RDSessionHost
Adds one or more RD Session Host servers to a session collection. Windows Server PowerShell reference
From the Windows Server PowerShell reference 3 parameters Its page in the reference
Parameters
-CollectionNameSpecifies the name of the RD Session Host collection.-ConnectionBrokerSpecifies the Remote Desktop Connection Broker (RD Connection Broker) server for this Remote Desktop deployment.-SessionHostSpecifies an array that contains the name of one or more servers that run the RD Session Host role service.