Add a Submenu from Another Submenu in a Custom Theme

Question

Good day everyone! I would like some help from you since I'm just a beginner in WordPress. I would like to add a submenu under another submenu like this:

• International
  • China Independent
    • Group Tours
    • DPRK Add-ons
    • Classic Chin
    • YPT Exclusive
    • Ticket Services'

I don't have a problem adding them under 'China Independent' when I go to 'Appearance>Menu', however, they don't show up[maybe because it is indeed a custom theme] and I want them to be seen as drop down list on hover since China Independent is another different page. How can I achieve this?

You can see this image:

Or the link: http://www.developerspace.co.vu/

All your help will be greatly appreciated!

Note: I've also asked it on wordpress stackexchange but I have no luck so maybe post my question in here as well.

Answer 1

You need to use javaScript in order to make that, use this plugin