Some specific questions

For 1 on 1 videochat sessions you can take a look at these plugins:
https://www.ads-software.com/plugins/webcam-2way-videochat/
https://www.ads-software.com/plugins/ppv-live-webcams/ – includes a group chat lobby

Our apps include timers that can be toggled from parameters.

In licensed mode all software limitations are removed meaning unlimited rooms and users can be active at the same time. These are limited only by the hosting resources and installation settings/parameters.

After setting up existing editions, our staff can customize these for additional fees depending on exact requirements.

You can contact our developers for details:
https://www.videowhisper.com/tickets_submit.php