how do you enter “St. Moritz” as a destination in the Navi…?

How do you actually enter places in the navigator that consist of two parts or are separated by point, line or space, for example “St. Moritz” or “Kamp-Lintfort” or “Neu Ulm”. My RTI Navi shows a submenu “further characters”, but in it are activated only ü, ä etc., all others are not selectable. Rolo which is curious which solution there is