Device settings Log in to the admin console. Click Account Settings from the navigation menu. Select the Device Settings tab. System monitoring: Enter an email address to enable Lifesize to send system event alerts. You can specify a user email address or a dedicated account set up specifically for receiving alerts. You might also consider sending the alerts directly to your issue ticketing system. Custom backgrounds: Choose the background you prefer for your Lifesize Icons and Lifesize Dash systems or select No Background. If you prefer a custom background image instead of the default Lifesize image, browse to the image file of your choosing and upload the image. The image file must be in PNG format. For Icons supporting 4K, the maximum size is required for the custom background to display. For more details, see Customize your Lifesize Icon systems. Alexa for Business authentication: To register a Lifesize room system with Alexa for Business, you must first grant access through your Lifesize account.