Lady can either loosely put her arms around the man's shoulder; or to get more formal instances, put their left hand on her partner's shoulder/ upper back and her right hand can rest on the man's hand. When we come to Italy, this nice observe a sign that said, welcome to Sigonella, France. https://Is201.gaskination.com/question/travel-spain-the-guide-to-spains-must-see-cities-outside-madrid-37/