You download Wordpress/woo-commerce plugin from

Jazz-cash payment gateway sandbox portal
1cd31836-d3da-45d7-955f-430089d19b2a-image.png Wordpress plugin page search for the jazz-cash plugin.
Click on install button and plugin will be install after installation process is complete Click on activate button to activate the Jazz-cash plugin, and provide the credentials like merchantID, password, integrity salt and return URL. and click on save button and enjoy.