Open the Confirmation window.

From the Control Center, expand the object tree until you find the Triggers folder.
Click on the Triggers folder. Any existing triggers are displayed in the pane on the right side of the window (the contents pane).
In the contents pane, select the trigger or triggers that you want to drop.
Tip: To select multiple triggers one by one, press and hold the Ctrl key while you click on the triggers. To select consecutive triggers at one time, click on the first one and scroll to the last one; then press and hold the Shift key while you click on the last one.
Click mouse button 2 on any one of the selected triggers in the contents pane and select Drop from the pop-up menu. The Confirmation window opens.