If you forgot to stop your time, for example over lunch, go to the history-view and long-press on the day and hour where you want to insert the break. A normal create time dialog should now be shown. Edit the start and stop time to match the break length and then choose “Insert break” as project name. When you save this one, the time you long-pressed on will be split in to two blocks, one before and one after the break.
Insert breakMikael Alfredsson