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Add a favourite website to a Tab Group in Safari on Mac
You can organise favourite websites in your Tab Groups.
Turn on Tab Group Favourites
In the Safari app
on your Mac, click a Tab Group in the sidebar.
If the sidebar is closed, click the Sidebar button
in the toolbar to open it.
Choose Bookmarks > Show Start Page.
Click the Options button
in the bottom-right corner of the window, then select Tab Group Favourites.
Add a favourite website to a Tab Group
In the Safari app
on your Mac, go to the website.
Choose Bookmarks > Add Bookmark.
Click Add.