## Starting and Stopping a simulation

To simulate a workcell (e.g. to test a programmed process), you use the `Scheduler Toolbar`.

![](GUI_startsim.PNG "")

By clicking the `Play` action, the simulation is started and you will receive visual feedback in the render widget, as well as in the status bar. You will be able to see the current simulation time as it progresses over time.
You can also `Pause` or `Reset` the simulation by clicking the respective action in the toolbar.

![](GUI_schedulertoolbar.PNG "")