On the “Run job” page, low left there is a section for placement of all components:
Place All button goes through the lines in job data table in order, executing the method to all components in component list or just the method itself, in case the method is a command, such as pause or recalibrate. The exception is “Fiducials”, which is used in board measurement.
Pause stops the job and asks either to cancel or to continue.
Stop stops the operations.
The rest of the items to the right of the buttons are status labels, indicating which part the machine is currently working on.