If you do not see this button, use the Solution > Run menu item. You could also display the Solution toolbar by selecting Tools > Toolbars > Solution and then clicking the toolbar button.
The Residuals display will automatically be created and will show the progress being made by the solver. If necessary, click on the Residuals tab to bring the Residuals plot into view. The tabs at the top of the Graphics window make it possible to select any one of the active displays for viewing.
During the run it is possible to stop the solution process by clicking on the 
(Stop) button in the toolbar. If you do halt the simulation, it can be continued later by clicking on the 
(Run) button. If left alone, the simulation will continue until 300 iterations are complete.
The Residuals display at the end of the calculation should look as shown below.
