A photo competition has many dates: the call for entries, a reminder, the submission deadline, the voting window, the results. In JAFO you enter just one of them – the evening of the image review. The plugin works out all the others from it, using defaults you set once per club.
If a competition needs a different rhythm, you switch the automation off for that brief and set the dates by hand. As you type the date, you see the computed deadlines shift straight away.