Hi @sbeat,
Thank you for getting in touch, we do appreciate your time.
You should be able to achieve something very similar as the website example provided does make use of our plugin, meaning the tools seen on the website are included in our plugin.
With that said, it is possible that this solution may be using our Pro add-on, or some additional customizations.
A good starting point would be to take a look at our Store Locator documentation here: https://docs.wpgmaps.com/UNk4-store-locator – Which covers some of the basic features of setting up a marker search system.
I hope this helps? If you have any more specific questions, please do let me know and I’d be more than happy to assist as much as possible.
Please note: We are not allowed to support or answer any Pro add-on related questions on these threads, so you may prefer getting in touch with us via our website instead if your questions are related to Pro add-on functionality.