In this step we will add an angle between the three coarse-grained beads.
Switch to the Angles section.
Like bonds, angles are defined by selecting a triplet of beads from the drop down menus. The angle is displayed in yellow color on the visualizer.
Beads A1, A2 and A3 should already be selected. Press the Add button. The added angle is displayed in blue on the visualizer.
The angle is now defined. Let us now proceed to the final step.