Insites Select allows you to create a dropdown feature, but in this case, in full custom mode. You can customise your dropdown menu to either have the Multi-select select feature (where a user can select one or more items from the dropdown), the Group feature (where you can add a heading to options and group them as you wish) or the Dynamic feature (where it allows the user to 'add' a new dropdown option). All these, and you can also add a 'Search' function in your dropdown. What more can you ask for?
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