You can use the Recalculate command for one or multiple Exhibitors in an Event.
See the topic Recalculate to learn about the Recalculate Options available when recalculating financials for Exhibitors.
You will find the command in the top ribbon of the Event Exhibitor edit form.
Figure 387: Recalculating One Exhibitor
You can also multi-select Exhibitors under the Event's Exhibitors tab, and access the command above the selection grid.
Figure 388: Recalculating Multiple Exhibitors