[ If you ment to make the instance a part of the actual map ]

I'm sorry, but that is not possible. The instances are located in other maps then Azeroth is so the instance can't be used the same way as Shattrath. The areatriggers is what causing you to get teleported into the instance.


[ If you ment the instance to be accesible for everyone ]



Otherwise you could make the instance "public" by changing the type and max players to '0' in worldmap_info [Ascent Structure] Then you could have a lot of people there, then the people got enter the dungeon by a portal or some teleporter.