The Hyper-V - List VM Task allows you to list virtual machines hosted on a specific, local or remote, Hyper-V Management Server.
Local/Remote server
Select the the Local server radio button if you want to control the local computer, select the Remote server radio button if you want to control a remote computer.
Server name
Host name of the remote server.
Credential
To control a remote computer you may need to use a Credential. The Credential must match the user name and password of the user that you want to login for. Select a Credential in the combo box or click the Settings icon to open Manage credentials in order to add or edit Credentials.