Where to enable the Parts category for top bar?

I have looked everywhere to enable direct access to the “Parts” module/link and I cannot find it anywhere? I followed the Knowledgebase on it and it doesn’t even exist.

The only way I have been able to get to it is through a ticked and then adding a part?

Am I just dumb? (Probably… I hope).

Any assistance would be nice. I did create a ticket a few days ago but no response.