You can set the default tab between "All Content" and "Categories" for members when they view your courses page. This setting determines which tab is displayed when a member first visits your courses page.
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Click the admin panel
Click Settings and select the Menus tab
To open the edit popup, click on the three dot menu on the course column and select the edit option.
Once you have selected your preferred option, click the "Save" button to save your changes.