Most of the times by default you will get single Remote desktop session but if you want to make them multiple you just have to follow below steps:
- Login to Remote Desktop server.
- Now press window key and search for gpedit.msc and click on it.
- Navigate to Computer Configuration >> Administrative Templates >> Windows Components >> Remote Desktop Services >> Remote Desktop Session Host >> Connections.
- Now you will find option “Restrict Remote Desktop Services user to a single Remote Desktop Services session” you have to set this disabled.
- Now you have to double click on “Limit number of connections” option and set RD Maximum Connections allowed to 999999.