Show children when selecting parent

Hi there,

we just installed your plugin in our development environment today and think it might be an awesome addition to our page. It is very small in comparison to other plugins, fast and very flexible to use.

There is just one thing I am wondering and we could not achieve:
Considering the following situation: There is a category navigation with the main categories A, B, C, D with child elements A1, A2, A3, B1, B2, B3…

To have a good overview, we would want the child elements to be hidden initially. When selecting one main category (for example A), it would be great, if the child elements could automatically be shown as well (A1, A2, A3).

Please do not hesitate to contact me, if you need further information from my side.

Thank you in advance!

Best regards,
Christopher