Two userman

hello guys is it possible to have two user-manager, such that captive portal server send the request to the first one if not there send it to the second?
King regards

script it. use netwatch to monitor the server and change it if it goes down

Thanks for your reply I am migrating a new userman and so I want it to chey new if not there check old userman
regards

hmm i wonder what happens if you add a second radius server?

google gives:
http://forum.mikrotik.com/t/hotspot-with-more-than-one-radius-userman/36710/1