Well, DS isn't a modeller so your options are limited. You could use a series of cubes, scaled to make walls, with three for the wall with the door and fourth for the door. Hide the dorr item, export as OBJ and make sure Ignore invisible nodes is on in options, then remove the primitives (except the door), import the OBJ and you have your shed and door. Now you can either create a null, position it where you want the hinge, and parent the door to it or you can use one of the free move origin scripts to change the pivot point of the door itself. To set your constraints, in DS3 double-click the Parameter slider, set Respect limits to On and set the limiting values you want; in DS4 click the little cog icon and select properties to get the same dialogue. You can use the settings dialogue to hide or lock parameters you don't want.