Multiple Session:
gpedit.msc
Administrative Template --------> Windows Component ----------> Remote Desktop -------> Connections
- Open Server Manager
- Select Add Roles and Features
- Select Role Based Installation
- Install the roles below
- Select Add Roles and Features
- Select Role Based Installation
- Install the roles below
Do note, that in this case you cannot use Server Manager to manage the RDS environment, which means you need to use i.e. GPO to configure licensing, and manually add users to the local Remote Desktop Users group to allow access.
