Most Helpful Girl
You cannot do that anymore.1
You can't. Users can only select one topic category for their questions.
You don't. You used to be able to have that option like a year ago, but then they stopped it so now you can only choose one category.
You could do it before. Not anymore
I don't think it can be done.
You can't, but sometimes admins add categories
Normal site users can't do that.
Mods and admins may find a question in a wrong category though
and they'll change/add the right category to the question. ^.^
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