Why our temple does not have walking meditation? and why there is someone leading us through the instructions with his voice while we are supposed to be seated quietly during the sitting meditation?

I invited my friend to the temple for meditation. He wondered why our temple does not have walking meditation. On top of that, he would like to know why there is someone leading us through the instructions with his voice while we are supposed to be seated quietly during the sitting meditation?

Summary

Those who wish happiness in this life, the next life and the most happiness so as to extinguish all the defilements to reach Nirvana, have to develop themselves by following the steps to happiness