PSA enables you to create, update and delete multiple resource requests simultaneously when working with projects and opportunities.
You can conveniently recalculate schedules for related resource requests on a project when project tasks or project task assignments have been updated. However, schedules exceeding 24 hours in a day will not be updated or rescheduled. See auto-recalculate-schedule-for-held-resource-requests and Eligible for Schedule Recalculation for more information about controlling this feature.
On the project's Resource Request related list, click Reschedule Resource Requests.