Could we use Visibility function in module Form UI or update it in code?

Visibility conditions can be defined through code for Page Builder, Form Builder, and Admin UI, which might suit your scenario. There are default conditions that cover common use cases:

https://docs.kentico.com/documentation/developers-and-admins/customization/extend-the-administration-interface/ui-form-components/ui-form-component-visibility-conditions#default-visibility-conditions

You can also create custom conditions:

https://docs.kentico.com/documentation/developers-and-admins/customization/extend-the-administration-interface/admin-ui-customization-model-overview#ui-form-component-framework

https://docs.kentico.com/documentation/developers-and-admins/customization/extend-the-administration-interface/ui-form-components/ui-form-component-visibility-conditions

Hi Milan,

Thanks for you help, do you know any example to config for custom Module Form UI,

I've checked here, but don't Visibility feature here.

Yep, it’s not directly in the UI. That’s why I pointed you to the visibility conditions defined in the code. I’ve successfully implemented them for widget properties. The documentation says they should also work in the admin UI, but I’m not sure whether that includes custom modules as well. I recommend putting a bit of effort into trying it yourself or waiting to see if someone else can provide more detailed guidance.