The JSJ Online Roster System is an online volunteer scheduling system designed to be extremely quick and easy to use. Your volunteers are already donating their time to work for your organization and should not be burdened with extra administration just to let you know when they can work.
The basic concept is that members simply check or uncheck boxes in order to mark their availability. Logging in is even made easier with auto-login links included in system emails. Members can also view the schedule, or the list of volunteers and which positions they can fill in order to facilitate covering or exchanging shifts due to unforeseen circumstances.