To delete multiple Planner actions:
1. Click Planner on the menu bar.
2. If you wish to delete all Planner actions, click Select All. If you wish to delete some Planner actions but not all, click MultiSelect. If MultiSelect is clicked, click on the rows on the Planner grid that you wish to delete. Press the Ctrl key on your keyboard while clicking on the rows. This will enable you select multiple rows.
3. Once the rows have been selected that you wish to delete, click Planner on the menu bar and click Delete Selections.