We have setup two applications CA_APP1 and CA_APP2 as shown below
Right click on CA_APP1 in define perspective to modify the properties
In notification create an alert when the application completes.
In services perspective configure the alert to trigger the event which corresponds to the second application which is CA_AAP2
Trigger the application CA_APP1 and you can observe from Monitor perspective that the CA_APP2 application also triggered automatically once the CA_APP1 completes.