most exhibitions have adopted a priority points system that is intended to serve as the basis for scheduling the assignment/selection of space
Exhibitors who have accumulated the highest number of priority points are given first access to the available space
Simple systems tend to award a point for each year of participation.
More complex systems also may take
consecutive years of participation, booth/stand size, value of sponsorship or advertising purchased,
and, in the case of association-sponsored events, whether the exhibitor is a member or not into account.