You can copy and paste these examples into the CSS and Styles section of DayBack Admin section. See this overview of how to change DayBack CSS and Styles.
Can I make a specific popover field read-only?
While we don’t yet have a built-in way of making specific fields read-only, you can prevent users from being able to click on a specific field using the following attribute in the style definition for the button:
Can I make a hide certain fileds?
You can also hide certain fields from displaying by setting the display properly for the field: