there are two ways of adding tabs as per Wikia
what should be the necessary one?
What's on your mind?
Welcome to Discussions!
This is the place to talk about your favorite topic, to share news, theories, ideas, and to connect with others.
To learn more about what you can do here, check out community.wikia.com/wiki/Help:Discussions
If you're an admin on this community, read more about how you can customize your Discussions and set up guidelines for contributors: community.wikia.com/wiki/Help:Admin_and_Moderator_Tools_in_Discussions