When Paula is coordinating the timing of activities for school fundraiser events, she is using

a schedule

Explanation:

In simple words, As a simple time-management method, a calendar or timetable contains a list of periods at which future activities, events or acts are expected to occur, or a series of activities in the sequential sequence under which certain items are planned to occur place.

The method of producing a timetable to determine whether to arrange such tasks and how to dedicate assets to the range of alternative tasks is considered scheduling, as well as a individual can be considered a scheduler.