The groups are managed by BuddyPress. Please make sure that the groups feature is activated in Dashboard > Settings > BuddyPress.
Once a group is created, you have to select it when editing your course. Please find the attached screenshot.
Please be aware that to reduce repetition in CSS, and improve powerful runtime effects like theme switching, we use variables to customize our theme. The button style will be automatically adapted with the colors of your theme using those variables.
Hope this will help you. Let me know if you need more explanations.
You're trying to setup your theme but you're experiencing errors when importing the demo content? Or you've just followed the setup guide but your website doesn't look exactly like our demo? These are common issues for which you can find easy and quick fixes.
Feel free to review our theme on Themeforest! It helps us making our products more known to new potential customers, which allow us more time to improve the quality and develop new features. #SharingIsCaring ❤️