Aaron Grasswell put up a tutorial on how to run MRC on RemoteAccess. I think several other DOS BBS Softwares can use this technique too. I've also seen some WildCat boards doing the same technique.

If you're running a BBS software that doesn't natively have an MRC client written for it, check this write-up on how to do it.

How To Run Multi Relay Chat on Remote Access: =============================================
http://www.dsbbs.ca/howto/mrc/

|11// |03Smooth |07+o |05{|12{|08.|15DESPAiR BBS|08.|12}|05} |14

... Everyone is entitled to my opinion!

--- Mystic BBS v1.12 A48 2022/02/03 (Windows/64)
* Origin: DESPAiR BBS // sys:Smooth // Covina, CA (10:103/11.1)