Once you have set up your Workshop activity, you will have access to the Workshop planner tool. The Workshop planner tool allows you to visualise the various phases of the Workshop activity. By clicking on the circle icons in this tool, you are able to manually switch the Workshop activity between the Setup phase, the Submission phase, the Grading evaluation phase, and the closure of the activity. You can switch back and forth between these phases as required, but that is not recommended.
There are links in the column for each phase which indicate what happens in that phase of the activity, and what edits you are able to make to the activity at that stage.