ID:273701
 
do something similar to instanced dungeons?

For example, having a basic dungeon layout set in a separate map file. Then, each time a player or a party wants to access that dungeon, create a copy of that file and have their group be the only ones with access to it. When the dungeon is done or all of the players logout, delete the file created.

Can something like that be done?
Yeah, you can definitley do this. Look at using the !(not) operator to dis-allow access for certain people, and try out SwapMaps.