Working with volunteers
The first step is the pre-planning. Know what is to be done, prioritize the separate tasks, estimate the number of persons and amount of time to complete each task. Make a brief list of things to cover at the beginning of the project; thank you for being here today, a brief summary of the project and how their effort will support it, ladder safety, etc., and ask if anyone has any special requirements, i.e. has to leave early, etc., as this may tell you where to assign them.
Arrive early. Allow time to start chatting and mingling with volunteers, in order for you to have an opportunity to learn who the leaders may be.