Creating subforums below a forum?

I'm trying to get the forums to show up like this

but instead it just does something like this 


What I'm saying is I want to make forums listed underneath the main forum as showed in first image, but all it's doing is showing like in the second image..
you can see the forums if you need to http://avalancheofficial.forumotion.com/

Also using ModernBB if that helps with anything.

Hi there,

Admin panel --> Display --> Homepage --> Structure & Heirachy --> Index packing (choose your style)

This is what I have selected from what you've sent me, but it isn't doing anything.

-EDIT-

here what I have under the categories and forum section...

Did you attach the forum to that to make it a subforum?

General --> Forum --> Categories and Forums --> Forums (choose one you want make as a subforum) --> Attached to : (forum)

Draxion wrote:Did you attach the forum to that to make it a subforum?

General --> Forum --> Categories and Forums --> Forums (choose one you want make as a subforum) --> Attached to : (forum)

Yes.

Hmm... I wonder if it has something to do with the new version, ModernBB.

Do you have a testing account I can use? If so, send it via PM.

I pm'd you it.

Thank you.

I guess it doesn't exist on the newest version, which is very inconvenient. Perhaps we should wait until an admin see this so they can assist you further. Sorry I can't be much help.

-snip-

I've changed my mind on this here, you can delete this or something when able. Thank's for the attempt to help though !

Hello,

Since this is a suspected bug, we want to keep this open until our pro admin can have a look into this on Monday. After that, we will close this for you.

-Brandon

I've found a temporary solution to the issue, for now I'll just go in the permissions tab of the forum, and set the "View the forum and its messages" option to Administrators only, then after doing that I'd go to the Forum Description part and do something like this.

Introductions

Welcome to the forums! Introduce yourself to the community!
Sub-forums: Leaving

Announcements

Get information & announcements by the Forum Management here.
Sub-forums: Updates, Rules

and on the blue link looking text is where I would link the hidden forum for the users to be able to access... so for temporarily this could help until the issue is fixed with the ModernBB..