1. Download certificate module from http://download.moodle.org/download.php/plugins/mod/certificate.zip
2. Extract it and place in /var/www/moodle/mod
3. Open browser at http://localhost/moodle/index.php.Then Login in.
4. It will show certificate module. Click update button.
5.Click on Home in Navigation column.
6. Click on Turn editing on in Settings column.
7. In Main Menu, Click on ” Add an Activity” and choose “Certificate”
8. Give the details for the certicate having name, watermark, border, signature etc.
9. Certificates are ready to download in pdf format.