SelectBox

When you add Selectbox element to the search block initially you will see that there is no attributes found message. To configure your selectbox click on the pencil icon on the right corner.

First you have to chose between either meta or taxonomy from the Data Tab in the Select Panel.

The Appearance Tab can be used to set title, subtitle or adding a custom CSS class name. You can also control the toggle options from the panel.

After you change your title and setup necessary configuration then it will look similar to the below Snap,