The web application packages on Plesk can be managed by using siteapp.exe utility. This utility can add or delete any web application packages in the Plesk server application vault. It can also help to view the information about web application packages in the application vault. The following command is used to add an application package to the Plesk server.
Command:
siteapp.exe -install-on-server -file
or
siteapp.exe -i -file