There are three server details needed to do this
2.ssh to connect endpoint server
3.ssh to connect PA server.
Step1 : Upload the package into PA server using Services->Applications->import package.
Step2: Connect the Endpoint server using SSH. Upload the package into the endpointserver.
Step3: Go to the endpoint server terminal window
From SSH go to #cd /var/www/html
Then run # sh endpoint.sh foldername packagename-1-0.app.zip
In this Step you will get enpoint as http://endpoint.com/foldername
Step4: Go to PA server Click on the package-Go to Instances.
Enter the endpoint created in the previous step to the APplication API end point URI