You can check the currently logged-on user on the logon user administration screen and forcibly log out.
In this screen, you can check "Account" "Time logged on" "Time last accessed" in the list.
By clicking the "Refresh Screen" button, you can display the latest logon status.
In Figure 1, you can forcibly log off the logged on account by clicking on the "Disconnect" button.
In the disconnection operation, it is recorded in the log (system.log) as follows.
[INFO jp.jasminesoft.jfc.LogonStatusManager removeUserName] (admin@localhost) JFC-90003:アカウント suzuki がセッションから除かれました。
Give the logon account a "disconnect" principal.You can disconnect with that account.
Create a dedicated account (optional name).At this time, set only "change password" and "disconnect" to the principal.(Setting this other principal does not treat this account as special.)
Even if the number of concurrent connections reaches the limit, you can only log on to this account.You can perform disconnection processing.