Windows Server 2016 Install RDS

[1] 

It needs that the Computer you'd like to install RDS (Remote Desktop Service) is a domain member Server.
(It is not recommended to install RDS in Domain Controller because of security risk or performance reasons.)

[2]Run Server Manager and Click [Add roles and features].[3]Click [Next] button.[4]Select [Remote Desktop Services installation].[5]On this example, select [Standard deployment] to proceed.[6]On this example, select [Session-based desktop deployment].[7]Click [Next] button.[8]Specify Remote Desktop connection broker server. The servers in the Domain are listed, select from it.[9]Specify Remote Desktop Web Access server. The servers in the Domain are listed, select from it.[10]Specify Remote Desktop Session Host server. The servers in the Domain are listed, select from it.[11]Check a box [Restart the destination server automatically if required] and click [Deploy] button.[12]During installation, System will restart once. After finishing installation, Click [Close] button.