
Explanation:
Box 1: Now() only.
The Now function returns the current date and time as a date/time value.
Box 2: Switch() or IF()
If and Switch functions in Power Apps determines whether any condition in a set is true (If) or the result of a formula matches any value in a set (Switch) and then returns a result or executes an action.
Box 3: isMatch( TextInput1.Text,"emergency",Contains & IgnoreCase )
Example: IsMatch( TextInput1.Text, "hello", Contains & IgnoreCase )
Tests whether the user's input contains the word "hello" (case insensitive).
Reference:
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-if