By beginning a Group Discussion, you not only seize an opportunity to speak but also you grab everybody’s attention.
By starting a GD, you will get maximum uninterrupted time to present your views and skills to the examiner as other participants are still busy in understanding the topic.
Do not emphasize on your individual viewpoint while summarizing a GD.
The most important point to focus on while starting a GD is that you should not quickly conclude the GD at one go but give a space for discussion to solve the problem.
You should start a GD only if you have properly understood the topic and have some knowledge about it.