Hi

You can display dropdown values as radio buttons in the dropdown properties:

You cannot rearrange the radio buttons in a horizontal or vertical alignment yourself. This might actually be a good idea to implement, you can raise an idea here:

https://communities.bmc.com/community/developer/pages/ideas

As to use the value to hide or show a component you can use the "Hidden" property of a component:

If a component does not have this "Hidden" property or leaves some artefacts (like a border), use a Container component. Put inside the Component you want to hide and use the Container "Hidden" property.