Tvheadend

Dear All,

sorry for annoying you possibly with a very stupid question, but I wasnt able to find any suitable answer neither on this forum nor in the web up to now.
Thats why I am desperately calling for your help.

In my setup I have only one DVBS2 tuner card in a server running tvheadend 4.x
The live-tv stream can be perfectly accessed from a TV connected to this server and also from other clients distributed within the house and running kodi.
Of course I am aware that this way only one transponder can be accessed at the same time.
However, I would like to watch TV from the various clients -- but not at the same time.
Therefore one client connected to the tvheadend server should have access to all the channels.
Then typically you would have to press "stop" to leave the subscription to the server and you can access all channels from another client.
Except sometimes, when I forget to press "stop" on one of the clients, the next one annoys me with the "tuner busy" message, as the previous client is still connected of course.
Is there any means to "throw out" the previous client from the subscription when using another one?
I hope it became clear what I am looking for....

Thanks for your help in advance!