Hi Chi,

After a solution is complete, right click on Solution and then select Shear-Moment Diagram from Beam Results (please see the picture below).

Then you will need to select a path for which the shear and moment diagrams will be plotted. The path needs to be defined in advance by right-clicking on the "Model" in the outline tree and then selecting "Path" from "Construction Geometry". Please let me know if you have any trouble following this.