I would like to see sub fields based on other custom fields. For example. I would like to create a custom field for Cell Phone Selection. The list would contain iPhone SE, iPhone 6s, and Samsung Galaxy. Under the iPhone SE and iPhone 6s selection I would like to add a submenu drop down that would give me options for colors including Rose Gold, Gold, Silver, and Black. Under Samsung Galaxy I would like to add S5, S6, S7. I know one of the competitors can do this already. I would like to see WHD do it.