Open the structure window either by click on "Filter" - "Structure" or by the toolbar.
The structure window allows to choose the filter structure. By choosing a filter topology, the matrix values change too and are displayed in the matrix window.
When "Auto Rotate" is activated and the filter specification are changed, the matrix rotates automatically to the chosen filter topology. For filters with many resonators it takes a little time to do all the rotations.
The bar on the bottom right allows to change the size of the filter drawings.
To obtain structures with multiple source or load coupling, the "Multiple Source/Load Coupling" box has to be activated. Multiple Source Load Coupling
In the example on the right, source and load are both coupled twice. As a result, a box structure can be choosen.