Started SCRUM Board

Is there an option to make the first view of the SCRUM Board without swim lanes?

And how does it work when I move a task in the SCRUM Board within it's status - to prevent dropping it in any status column? i.e.: If a task has a status "testing internal" it sould not be able to move it into "roll out production". Also this should not be able within editing a task (the options from the status drop down).