How can I change the number of finite elements a wall is divided?
From the menu Parameters/Eccentricity-finite elements, you may specify the number of vertical subdivisions cross the floor height (default 8). The subdivisions along the wall length are set automatically so the proportions of finite element side are about 1:2. It is advisable to solve a structure first with the default number, 8 vertical subdivisions, and then with more refined mesh for example 16 vertical subdivisions and compare the results. Usually from our experience the default 8 subdivisions give accurate enough results for the most common buildings of masonry structures.