From main screen, press 'Where To?' > 'Personalise' > 'Search Tools' > 'Coordinates'. That will add its icon to the search menu.You can do the same to add 'Junctions' and 'Towns' and also Shortcuts for 'Favourite Search', 'Category' and 'Saved Place' if you want. That's from 2/3xx7 but i'm sure 2xx9 is same or very similar.
Bookmarks