You can setup posting to allow multiple cities but the current version 3.0.5.4 does not have the feature to sort and to search based on cities/location yet. Advanced search is planned for implementation on version 3.1.
However, there are users who were able to implement it through custom coding.
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here. However, you can send a PM to follow up and remind me if I missed your support request/thread.
Thank you and have a nice day.
