Thanks for your question, @TylerHill. If a link like Discussions is hidden on the Course Menu, student access to those items is hopefully provided by the instructor through links on the Modules page or elsewhere in a course. For example, in my courses the Discussions link on Course Navigation menu is hidden. Content discussions are linked from Modules and the Q&A discussion is linked from the homepage, so my students can access those items within context.
I'm not sure what the labels option is that you mention. When I create a message using the Conversations (Inbox) tool using the Canvas Student app, I'm not asked for a label.
I'm going to mark this reply as a solution, which will help others in the Community with similar questions. If you can reply with more information your email question, that will help your Community colleagues answer that question too.