Enter the Email Address and Password associated with the BlackBerry ID then click Sign In. If a BlackBerry ID account does not already exist, click Don't have a BlackBerry ID? then follow the step-by-step instructions to create the account.
From the My Device section, click Lock Device.
Click Lock Device. If applicable, enter a password (between 4 and 32 characters) into the New and Confirm Password fields.
From the Lock Device screen, view the progress then click Close.