Open menu after click, not by hover

I made a custom header by using Beaver Builder themer. I need help with the menu settings. I don’t know how to describe it, but we would like a menu the same as
So the menu should open after click, not by hover and if you mouse to another section of the page, the menu will still be visible.

I made our menu horizontal, but if you mouse the menu goes away. I hope someone understands my question and can help me with this issue.

Our testwebsite is:
We set a simple password for the frontend view, so it’s not visible for all customers yet. The password to see the frontend is: wachtwoord.

Thanks in advance!

Best regards,