>how do you transfer back to a broker
Lol
> sell a few
Excuse me? We don't do that here.
> but when you need to sell some shares for funds
If you don't want true ownership, then that's your own fault when you get nothing at the end ;). You can sell directly out of CS without issue (as they have their own broker that they use), but TBCH, I'm fairly certain you already knew that.