To ad more than One Number of Locations please go to Wp-Admin -> Ads Listing System -> Listings Levels -> Edit any level in which you want to add locations -> Location Numbers Available.
Location numbers will work as a Different locations for One product like you are selling one product in different locations then you have to increase of locations number.
How it will work.
How to Allow all Locations:
Remember you have to select World Wide for no any Restrictions “Restriction of address fields for the default country (autocomplete and search)” by going to Wp Admin -> Ads Listing System -> Listings Settings -> Map Settings.
Hope this Article will help you.