You can edit the course settings in the course editing mode from the "settings" button in the top right corner. From the form that opens, you can edit all the settings you have seen in the course creation phase and new ones are also included.
You can define categories, change the theme and language settings, and specify whether the course should be run in linear order. You can add course owner information if you wish.
Add vocabulary if there is a need for it in the course. Additional customizations affecting the whole course can be made from the "advanced settings" tab, if your user role allows it.
From the course settings you can also save the course content as a template for future course productions. Give the template a clear and descriptive name. Finally, click the save button. Please note that the original course will remain unchanged and the template base you have just created will need to be edited separately in the "course bases" view in the future.