So lets say someone posts in area chat they have a T3 purple secret map. Do i need to have the same secret map to do that secret dungeon with them, or does only 1 person in a party need to have a map in order for everyone to do that secret dungeon.
Every secret map run ive done with people I say hey I have more want to do them, and they all leave.
@Redrowen is more accurate. Same tier. So if you got a epic/purple Rift, do that one over the Plateau. It is the same result but a smaller dungeon.
Note that if you have more than one secret map that would be valid, you can change the selected in the pop up that asks you to confirm usage of said secret map. Typically I just have the one I want gone higher up in my inventory.