There are 2 types of fields - "text field" and "number field"
a) text field
- it is useful to categorize properties (e.g. City or Property Type)
- it works very similar to "WordPress Posts Categories"
- it creates archive page - e.g. if you add "Los Angeles" to "City", it will create category page ”yourdomain/city/los-angeles”
b) number field
- it is useful to add number of bathrooms, size etc,
- it keeps single number value
- do not creates archive page