First off I'd like to say that the groups, roles, permissions that jira offers is pretty much one of the worst implementations I have seen. Simple things like assigning a group to a role, then giving the role the ability to create projects is missed. Instead you have to create a permission schema to associate to a project?
Anyway, what magic incantation do I need to envoke to link a project to a category? Not seeing any options from either the project or project category pages.