Multiple concurrent remote desktops can be run and managed within a single window using the MMC Remote Desktops snap-in. This may either be snapped into the MMC or launched from the command-line or a Run dialog by typing:
tsmmc.msc
Once launched, right click on the Remote desktops item in the tree in the left hand panel and select Add a new connection from the menu. Once selected the Add New Connection dialog will appear as follows:
In this dialog enter the IP address or computer name of the remote system together with the User name and the name to be assigned to this connection (this is essentially the name by which this connection will be listed and administered inside the Remote Desktops snap-in). For an administrative session (as opposed to a virtual session) set the Connect with /admin box.
Click OK to add the session to the snap-in. Once added, the session will appear in the left hand panel under Remote Desktops. Repeat these steps to add connections to any additional remote systems required.
To establish a remote desktop connection, right click on the name of the session from the left hand panel and select Connect from the menu. The remote session will appear in the window.
To establish a remote desktop connection, right click on the name of the session from the left hand panel and select Connect from the menu. The remote session will appear in the window.
To start another session simply right click on the session name and once again select Connect.
To switch between sessions simply click on the name of the session in the left hand panel and the corresponding desktop will be displayed.
The following figure illustrates two sessions running in Remote Desktops:

To change configuration options for each session right click on the desired session in the left hand panel and select Properties. This panel has a number of tabs which enable credentials, screen size and program start properties to be defined.
To change configuration options for each session right click on the desired session in the left hand panel and select Properties. This panel has a number of tabs which enable credentials, screen size and program start properties to be defined.