Enabling ecommerce

Hi all, I am having trouble enabling ecommerce in my Opigno site. I have installed the latest version. I have enabled Opigno Commerce module from the 'Extend' menu section. Doing so also installed a raft of Drupal Commerce modules. After installation, I managed to find the 'price' section under one of my courses, which indicates the Opigno module was correctly installed. However, I cannot find the configuration settings for the overall Commerce module. Where do I find / access the ecommerce store, payment gateway settings etc? Many thanks Anders