Login 'admin' in the joomla admistrator's page
\[Extensions\] \-> \[Extension Manager\]
In the 'Extension Manager: Install' Tab, use 'Upload Pakage File'
Select 'plg_myproxylogin-1.7.0.zip' file
Then click 'Upload & Install'
If successing the installation of new plug-in package, you can see 'Authentication - MyProxy' Plug-in Name in the 'Plug-Manager: Plug-ins' menu.
To enable new plug-in, you should insert values of 'Host', 'Port', etc. in the 'Basic Options' of 'Plug-in Manager: Authentication - MyProxy.'