Delete
If you select one or more contacts and choose Delete and click on the button Execute, the dialog window Delete opens. You click on the button Delete for the selected objects.
Change owner
If you select one or more contacts and choose Change owner and click on the button Execute, the dialog window Change owner opens. You select a new owner for the selected objects and click on the button Change owner.
Export
If you select one or more contacts and choose Export and click on the button Execute, the dialog window Export opens. You select an appropriate Export mode for the selected objects and click on the button Export.