I'm sure you've seen the little sub-areas in the main-areas, such as the hidden passage in the Blood Stained Sanctuary.
The way those work is simple; those locations exist for you to hold a roleplay in. If you're holding a RP in one location and another floats into the same location, please make sure you either keep the two separate by formatting your post like this:
"(Roleplay name here)
(Post here)"
If you want the two RP's to cross over and the characters to meet up there, go ahead. The name for a meet-up between RP's is formatted as following:
"(RP
#1's name here)+(RP
#2's name here)".
Please do not try to combine the names in interesting ways, that may confuse newcomers.