For volunteer needs, you may post them as One-Time, which has only one shift, or as Open-Ended which has no set date (i.e. needed anytime), or as Recurring which has multiple regular occurrences on either a daily, weekly or monthly basis. Selecting the Recurring option automatically creates those individual occurrences (over the date range you specified) toward the bottom of the table. Each of those occurrences may be edited (e.g. if a particular day falls on a holiday).