login by account which has administrator rights

Start > Control Panel > User Accounts > Manage another account > Add a user account (choose the name and password, and whether user will be local or administrator - preferably local)

Important step after adding user is to add him/her to the remote desktop group. Go to Start > This PC, and right click on the icon This PC > Properties > Remote setting > choose Allow remote connection to this computer > Select Users > Add ... > into the column Enter the object names to select add the user name and click on Check names, and if found, click on OK.

This procedure should allow user to connect to supercomputer using remote desktop facility.