I want to be abel to have the web visitors to click on a selection in the side panel and show a different set of routes or pushpins. Is there a widget for this?
Similar to this:
I have tried looking something for you and was able to get this one - Google Styled Maps 2.0.0 | Adobe Muse which looks like very similar to your requirement.
Please have a look at it and let us know if it works for you.
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