Can I limit the number of VUsers that can be simulated from JMeter

Hi All,

We are planning to set up a Lab in our organisation, where we want to have
our resources to have hands-on experience on JMeter. For the same purpose we
would like to limit the number of threads that can be simulated by the
JMeter user so that people can't simulate heavy loads on the test
application and clog it.

Is there any JMeter property by which we can restrict the maximum number of
users that could be simulated from JMeter

Your Response is highly appreciated

Thanks
Vineeth