For autocomplete drop-downs in Integration Hub, you can click on the arrow on the right or just click in the field to expand a list of available options. You can filter the available options by typing into the field. In many situations, you will be able to select multiple options from the dropdown. However, there may be situations where only one option is possible. The chosen option(s) in autocomplete dropdown fields will be the same for every item created in your action through this integration.
