[Draggor]

There are ways to connect modules. Not sure exactly how though. Try looking at a module like the penultima series. It has a central hub that allows you to visit other mods. If the module you want to connect to isn't big you can export the areas as erf files then import them into the first module you want them connected to. That way the module will contain areas for two different castles, the ruined one and the one back in time. You'd just have to create an area trigger where you want the portal and then do a normal area transition connecting one to the other.The best way to learn is find a module that does waht you want and open it up in the tool set. That's how I learnt. Hope this all makes sense.