Search by service area

Hi there, I don’t know how best to explain this but I have a full subscription to this service.

I basically want my visitors to have to select their desired search locations from a multi-select drop down. the idea is that visitors are not in the area they’re looking for and will want to filter out the areas they do not care about.

So, I want them to multi-select their search area and then have the ability to type in keywords for the listings in those areas.

I used Place Settings > Advance Search but I can only get single-select to appear in the search bar, or multi-select to appear under the little Cog wheel.

Is it possible to do this? Thank you!