Demantra abnormal logout

Hi, experts

sometimes, when logout from Demantra system, users close browser direcotry instead of clicking logout button, it make use can not login again, because the user is locked. the Way demantra provided is user Management portal to kick user off by admin account. is there a way can do it smartly, for example

1. system don't lock user whatever the way user lock off from Demantra(logout button or close browser)

2. if user is locked, when user login again, kick locked user automatically

3. To shorten the lock time, such as 30 seconds, any parameter to control

Thanks