In that forum, can I post a team that I'm using to complete my Platinum game? I don't know what you mean in the rules by competitive team. So yeah, I was just wondering if I can do that in that forum.
You use the In-Game Team Help subforum for any teams that aren't competitive based. If it is competitive (i.e. showing EV's, items and a full moveset) then you can go ahead and post it in the main forum.
I'm planning on showing the Moveset of all my Pokémon, because I want to know if I can make their moves better. I'm not all too worried on their EV's right now. Do I still post it in the sub forum, or the main forum?