[Roanon]

For simultaneous movement:
Normally, it is possible that ships fly through warp points opend in the same turn. Though, if the ship opening the warp point has to move before it creates the warp point, it may be possible that the ships that should use the warp point fly away from that point at first, and return after the point has appeared. In that case, it can be useful to set a fixed point to move to, near the location of the to-be-created warp point, covering the needed number of days, and then order to enter the newly connected system.
BUT: it is NOT possible to enter an unexplored system via the "move to" order. You MUST give a "w"arp order first, you can issue move orders to a point within that unexplored system thereafter, in the same turn, and it will work. But if a movement order is given to an unexplored system where the ship has not manually warped into, it will be ignored, though it can be entered. Entering the command to warp, on a location that does not (yet) contain a warp point, is not possible.
So: if you have explored a system, you can open a warp connection to it and enter it in the same turn. Otherwise, you have to wait one turn.