Click the Add button and select PCs to set up a connection.
Type the name of the computer to which you want to connect. If you wish to be asked for the username and password each time, leave the User account field as is. Otherwise, click the plus (+) sign next to User account and enter the username and password. You can also add a display name, which will serve as an account nickname. Click Save.
Double-click the icon for the remote PC to connect to it.
At the certificate screen, check the box next to Don't ask about this certificate again, then click Connect.
You're now connected to the remote PC. Instead of a blue bar on top of the screen, the Remote Desktop app uses a black panel on the side of the screen.
The magnifier icon at the top zooms in and out, while the ellipsis icon switches between full screen and windowed mode. Click the ellipsis icon and then select Disconnect to end the connection.