You can easily find the modules in the Nectar template by navigating to the Joomla Admin Panel > Content > Site Modules. From here you can see the list of published and unpublished modules.

You can also access and use the modules that come with the SP Page Builder & EasyStore components. From the Site Modules, click on the “+New” button at the top left corner of the page. In the search bar write SP Page Builder/EasyStore to find the list of the modules of this component.