Select the trigger and click on the copy option in the triggers panel or press control + c in the keyboard. Paste the copied trigger to the objects by pressing the control + v in the keyboard or click on the paste option in the triggers panel. You can also click control + d in the keyboard by selecting the specific object to copy paste the triggers. In the triggers panel you can see up arrow and down arrow where they are useful for rearranging the triggers. To delete the triggers, select the trigger and directly hit the delete button in the keyboard.