XF 1.3 Setting a category as a seperate index

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I'm looking to see if it's possible so say have one of my category nodes appear as the only one.

Say, i had a category node, and i wanted that node to NOT appear on the main domain.com/forums/ but appear as the sole category on something like domain.com/forums/roleplay.

A way to only "import" the wanted category node into a page would also be fine.

Thanks.