Expand category module on home page

Hello, I would like advice on how to expand the category module to show subcategories on the home page, just like it does when it is pressed. I have followed many tutorials online and tried to alter them as they are for older versions but have had no luck.

My version of OC is 2.2.0.0

Here is what it looks like now on the home page : https://gyazo.com/67ebc0c6e29999c2ac542ad02fce6394

Here is what I want it to look like on the home page: https://gyazo.com/cb341ed69f9f2fdfa3810eaa468e15c3

Thanks for your help!

What the different? you upload same screenshot.

anung wrote:What the different? you upload same screenshot.

Sorry, changed it now, here is what it looks like https://gyazo.com/67ebc0c6e29999c2ac542ad02fce6394

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