Step 1,
Get Database Properties

Note: This example uses three instances
on one machine,
which is why all three Mirroring ports are different

Step 2,
Mirroring page of Database properties,
then click on "Configure Security..." button
to get to Step 3

Step 3,
Launch of the
"Configure Database Mirroring Security"
Wizard

Step 4,
Include Witness Server,
Yes/No?

Step 5,
Choose Servers to Configure

Step 6,
Configure Principal Instance

Step 7,
Configure Mirror Instance

Step 8,
Validate Identity to Mirror Instance

Step 9,
Configure Witness Instance

Step 10,
Validate Identity to Witness Instance

Step 11,
Service Account Selection
(Notice the "Leave blank..." text)

Step 12,
Complete the Wizard page

Step 13,
Progress dialog

Step 14,
Database Properties Alert that appears
after completing the Wizard

Step 15,
Database Properties dialog,
Mirroring page,
AFTER Mirroring is configured

Notice, three different ports are used, but only because all three mirroring instances were on the same machine in this scenario!

Step 16,
A look at the database state
as it appears
in Management Studio's Object Explorer

Step 17,
After clicking on the (visible) "Failover" button to manually failover

Step 18,
A look at the database state
as it appears
in Management Studio's Object Explorer,
this time AFTER the mirroring role reversal