What is the difference between traditional and parallel volunteering?

1, the main difference between traditional and parallel volunteers is that traditional volunteers have only one first volunteer, while parallel volunteers have a number of parallel first volunteers, usually 3-9.

2, the increase in the number of parallel volunteers first volunteers so that candidates are the first volunteer school admitted to the opportunity to increase, but at the same time, because the vast majority of provinces parallel volunteers do not set up a second volunteer, only to set up volunteers, candidates to fill in the volunteers of the risk is also increasing.