The Residuals display will be created automatically and will show the progress being made by the solver. The progress may also be observed by selecting the Scalar Scene 1 tab at the top of the Graphics window.
During the run, it is possible to stop the process by clicking on the 
(Stop) button in the toolbar. If you do halt the simulation, it can be continued again later by clicking the 
(Run) button. If left alone, the simulation will continue until all the required time steps are complete. Note that the numbers displayed in the Output window represent the solver's inner iterations, not time steps. As there are 5 inner iterations per time step, you may expect the run to perform up to 5,000 inner iterations.