Dashboard refresh rate
You can change how frequent you want the dashboard to automatically refresh by clicking on your profile picture on the top right of your page and then go on ‘Settings’. This page will be shown on the screen:

Use the dropdown menu to choose the refresh rate of your dashboard.
Default Settings
You can define default settings when creating new monitors for common properties. Once they are set here, anytime you create the respective monitor the fields will be pre-populated with the data defined.