Specific jobs to be monitored/alert from an particular instance

In our organization we have multiple jobs running on different instance, in which few are critical and few are bound to fail, in DPA module we want to configure alert in such a way only if critical jobs  are failing will be alerted, rest other jobs need to be ignore. 

Please help with it, its little urgent. 

for eg. in Instance A - Job 1, Job 10, Job 50 if are failing need to be alerted, rest to be ignored