The first option is wrong here, you can turn on the highlighter only for the discrete fields in your view.
Refer: https://help.tableau.com/current/pro/desktop/en-us/actions_highlight_highlighter.htm

Explanation
Drop the Sales to the Rows and disaggregate the values. (Go to Analysis -> uncheck Aggregate measures) From Show Me, Select Box and Whisker plots. And drop the Ship mode to the columns.

Hover on each of the boxes:

Median for the First Class and Same Day ship modes are 84.

Go to the Map -> Map Layer
Cities Borders is not valid.
Graphical user interface, text, application, chat or text message Description automatically generated

Explanation
Create the calculated field:

Drop the carrier name to the view and % of delayed flights to text.
We only have 2013 data, so filter won't make a difference:

IF MIN ([dimension]) = MAX ([dimension]) THEN MIN ([dimension]) ELSE "*" END Refer: https://kb.tableau.com/articles/howto/when-to-use-the-attribute-attr-function