Add a hyperlink to the space navigation. You can link to internal or external web pages. Enter the Tab name and Tab URL. Upload or choose an icon. Then click Save.
How do I set the default filter for Cases to Open Cases?
You would have to set the filter, click apply, then copy the URL and create a tab or link somewhere.
No way to have the template default for the whole site to Open cases sort?
There is not a way.
Choose a location