To bulk delete resource requests in Resource Planning.
Resource requests are an efficient way to let your team know that you need a resource for a particular project. You can create a resource request when you need a resource but aren't sure who to assign, or if you do not have permissions to create assignments yourself.
You can bulk delete requests by creating a category (or subcategory), moving the requests into the category, and then deleting the category:
 next to the project and click Add Category.
 next to the project and click Add Category. next to the category and click Add Subcategory.
 next to the category and click Add Subcategory. next to the category or subcategory and click Delete Category or Delete Subcategory.
 next to the category or subcategory and click Delete Category or Delete Subcategory.Deleting a task on the Gantt can be undone by clicking the undo  icon, so long as you remain on the Gantt and stay within the same session. However, if you navigate away from the Gantt or your session expires, the task is permanently deleted.
 icon, so long as you remain on the Gantt and stay within the same session. However, if you navigate away from the Gantt or your session expires, the task is permanently deleted.