I realised later, much later, that my answer may not cover what you were asking. The admin (super user) can always force a logout of users. It is done at the backend.
The Login One! Business Edition has the option that the user who is trying to log in can force the termination of all sessions in case the login was refused. This reduces the effectiveness of the plug-in, but it's an option.

Do you mean that when a user has logged into the front-end, there is a limited time that this user can stay logged in? If this time expires, the user should be forced to log out?
The Login One! plug-in manages multiple concurrent log-ins and is therefore not a log-in timer.
So the short answer is: no the Login One! plug-in cannot do this.

But... we could take this idea and develop a new plug-in that does what you need...
I would say that as a minimum requirement, the website admin should be able to configure a different maximum log-in period for each User Group (and ideally for each individual user ACCOUNT). Agree?

Regards
(We will send you a PM as well)

Hi,

I have purchased Login One Premium. I wonder if there is a way to force logging out to users in the frontend. I really need that. So could you let me know if I could do it?

Thanks.