Once you have selected a player your card which was at the top goes to the bottom and the second card now becomes the top and now a new manager has the chance to select a player from the wire.
Now if when the time comes a manager decides to not pick anyone or they cannot pick anyone as the player they wanted has already been grabbed by someone else from the wire then they still retain their position at the top and they are skipped from the subsequent rounds, this is useful during the next waivers as now you can pick some players which were cut from the rosters of other teams, this is what happened this week with DireWolfM14, which were at the 5th position at the beginning of this week and now they occupy the 1st spot.