A Scheduled Task is created and scheduled for work that needs to be done during a particular shift.
A Standard Task functions like a stamp that users can schedule repeatedly over different shifts. You can create a Standard Task from an existing task by dragging it from the shift into the Standard Tasks list.
A Planned Task doesn’t have an exact completion date yet; therefore, it’s not a scheduled task but is rather planned to be completed in the future. Planned Tasks are located on the Planned Tasks list.