I'd like to add sub-links to the sub-menu of the default "Forum" tab, but I'm not exactly sure how I would go about doing this. I have the Tabs Add System for vBulletin 4 modification, however that mod (to my knowledge) doesn't have the option to add sub-links to default tabs.
For reference, this is the "sub-menu" I speak of (outlined in red):
tl;dr: how do I add links, or "sub-links," to the "sub-menu" of a default tab?
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