Firstly you have to make sure the IP address/URL of the MyConnection Server network you are joining is in your permitted domains list.

Click on the Join Mirror Network link.

Enter the address of the master server along with password and click the Join Mirror Network button.

There are three choices when deciding how you want the mirror relationship to work.

The options are complete mirroring, settings-only mirroring and database-only mirroring.

NOTE: Depending on which option you choose, your server settings will be overwritten with the master servers settings. Be sure this is what you want before joining the network.

Your server will now be connected to the mirror network and adobt the settings of the master server.