On the secret browser, place the cursor over the dropdown element and click it.

Select "Select from dropdown" from the displayed options.
​

Please enter an action name.
​Note: If you do not edit it, the action name will be "Enter information in form".
​

Select the chosen value from the suggestions and click Add.
It is also possible to add using the obtained value (output). In that case, the value of the obtained value (output) must match the name of the option displayed in the suggestions.
​
​If no suggestions appear, there is a possibility that the element you have specified is not a <select> element. If suggestions still do not appear after trying again, please use click or the item containing the specified text to configure it.
​

If the expected behavior occurs on the secret browser, the setup is complete.
The action will also be added to the Yoom editing page.