Hi,
we don't have any experience with AEM Forms, but we thought, this could be the tool to solve a task for a customer.
He want's to have 2 dropdown fields, which are connected together:

This is the first problem: the values of Department should change if the country is changed. This MAY could be resolved with a huge list of departments, which are hidden and only the one, that is related to a country, will get visible. But I really don't think that this is best practice.
The second (bigger) problem: the e-mail has to be generated trough country and department. There must be anywhere a list from the customer (third problem: the customer should be able to configure this list easy and not in a developer way).
We don't find a solution with OOTB tools from AEM. The when condition from the rules only affects 1 field, not more. So the second problem couldn't be resolved.
Does anyone has experience with this kind of problem or a better solution than AEM Forms?
Best wishes,
Maik