To actually perform the calculation (the geometry optimization of the ethanol molecule), use the Job → Run menu command in ADFjobs:
Make sure the ethanol job is selected in ADFjobs (it is if you followed the tutorial) Select the Job → Run command
This will execute the run script that has just been created. If you have never made changes in the ADFjobs setup, the default behavior is to run the job in the background on your local computer, using the Sequential queue. This queue will make sure that if you try to run more then one job at the same time, they will be run one after another.
Once your job starts running, ADFjobs will open ADFtail to monitor the progress of the calculation (the logfile):
While running the job status symbol in ADFjobs changes: