How to check/change business type in Revenu Québec?

So, around 2020 I registered for qst/GST numbers for a sole proprietorship. At the time I meant for it to be for a knife sharpening business I was operating. Nowadays my self employed income has shifted into mostly private chef stuff. I cannot for the life of me see what sector I'm registered at or a way to change it. Does anybody know? Does it even matter?

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u/VietyV — 3 months ago