I played once on some roleplay forum with mybb and on this rp forum was account switcher, wrote in javascipt. I looked how it works (I downoladed it mod from website mybb). How it works? After registration on this forum roleplay, account which I created was my "main" account and I can add other account using account switcher, I gave login another account and password. I can see it on my profil and choose it, log in a few second or back to main account.
Also I received notification from all my account, main and other.
I think that amazing and simple option, which can be add to forumotion. What do you think about it?

Exactly I have see this on Zetaboards where there is a link called multi-login by the normal login link.

Voted yes, that would be a nice addition

Voted yes

You have my vote

My voice too. Multi login is a very useful function for example (PBF - play by forum).
Sometimes players have a few accounts. Login and logout for a few accounts is very annoying.

there is this https://help.forumotion.com/t118184-switch-accounts-widget?highlight=Switch+Characters