1) Login in to your Plesk Control Panel.

2) Click "Subscriptions" at the left.

3) Click on subscription name.

4) Click "Applications" tab.

5) Click on install button which app you want to install.

6) Wait untill its not completed 100%.

7) Specify the location where this app should be installed then click Install.

8) Here you can see the information that your app was successfully installed.
