The dialog widow serves to define the line number of the beam location and material and cross section of the beam. Choosing the type of material (concrete, steel, other) then allows for assigning the material parameters either from the catalog of materials or manually using editor of materials. The cross section parameters (based on type of cross section) can be either calculated in the window "Calculation of cross sectional parameters" or manually input in the "Input of cross sectional parameters" window.
Added beams can also be edited on the desktop with the help of active objects.
Dialog window "New beams"