In the example above, each task has a 'Check off' cell beneath it. Checking it means the task is complete. The Check off cell automatically 'bubbles up'. When all the sub tasks of a task are complete, the task's check off is automatically set.

Each task also has a priority cell beneath it. This allows you to prioritize tasks into their order of importance. In the example shown above, each task is assigned a priority from 1 to 10. 10 is the highest priority and 1 is the lowest. The priority of the tasks "bubble up" the breakdown so you can immediately see which task is the most important and needs to be done next.

This To-Do breakdown also uses hyperlinks to reference other documents that will aid in accomplishing a particular task.  For example, the 'Hire Admin Asst.' references the resumes of the candidates. 

This is a simple example of a B-liner's hierarchical spreadsheet. B-liner's hierarchical spreadsheets are very powerful and offer much, much more!