At the moment you cannot transfer your liquid DCT to vested DCT like you do in Steem. To be honest with you I see no reason for someone to do so. In Steemit you have reasons to do it, but in DCT you are not gonna be dilluted by author rewards.
Right, there are no plans at this time for staking. There are two ways of earning DCT at the moment. The first is by being voted to the active witness list (to receive block rewards) the other is to seed content in a free market system. The later would require demand from publishers so it might be a little ways down the road yet.