To install the web application on your website from plesk please follow the following steps:-
1) Login to Plesk 9.x control panel.
2) Click on "Domains".
3) Select the "domain name " on which you want to install the application.
4) Click on "Web Application".
5) Click on "Install Application".
6) Click on the Galley Category on the left hand side and then select the version and
Gallery Application you want to install.
7) Click on "I agree" check box and then click on Next option.
8) Enter the Details and Crendtials required to install that application and then click on "Install".
