Guys, I have a request: Please address me as "Harman", I am not used to being addressed in such a formal way :)
Mr. Singhal, just like yours, we have got several requests to bring these features in the ORG side of WiZiQ, but we have deferred it for now due to resource constraints. We offered the ORG side mainly because we got many requests from companies looking for the virtual classroom. We intend to build WiZiQ.com for an individual teacher to a certain extent, say until sometime next year before we start working on the ORG side again. And we will try to bring all the WiZiQ features there.
As for your the "no sign-up for students" feature to attend classes, we are working to bring that feature for WiZiQ premium members in late January. Premium members will be able to let their students attend the class without having them to sign up on WiZiQ. I hope that will serve the purpose.