Hi, sounds for me like you search only the entrance / doors functions.
This is explained in the editor-guide.
Editor Guide: Dungeon Entrances, used to link transition doors together. This is important for Dungeon Entrances and transitions between dungeon floors. Link Mode is used to connect dungeon entrances when one or both sides are randomized (ex. Randomized Rift entrance). It is important that the link is made in both directions or the entrance will not work. To link two groups together, you toggle Link Mode and click on the black Dot that indicates the center point of the group you are linking to.
I will give you example pics how you can do this.
First pic up 2 entrance points - records / level art / undergrounds / setpiece_ xy what ever you like here.
After placing, go to the link mode in the editor :
Create a new group.Type:dungeon entrance, choose your first entrance.
Create a second group.Type dungeon entrance, choose your second entrance.
Go back to your first group an activate the link mode function.click the black dot on the other entrance. looks like :
Go to your second group and activate the link mode.click the black dot on the other entrance.
Now we have links in both directions and we can use our dungeon entrance.
If you like now to build a new interior for your dungeon, this is also easy.
Go to, editor layout mode - region / create new terrain.
On your new terrain, place an entrance and delete the old second entrance point on your first world.Go back in the editor to the link mode and link your new entrance to the groups you have created.
The first plate in the last pic is our main world, the second plate is an interior dungeon.
Sorry for my bad English.I hope you can follow, because its really simple.