In Microsoft Project, Summary Tasks are Misnamed

Microsoft Project has a feature called summary tasks. In Microsoft’s world, you take a bottom-up approach to creating your schedule. You create a list of tasks, and when you realize one can be broken up into smaller activities, you create those smaller tasks and indent them (making them subtasks), and your original task becomes a summary task. Microsoft writes:

In Project, an indented task becomes a subtask of the task above it, which becomes a summary task. A summary task is made up of subtasks, and it shows their combined information.

The naming convention (“summary task”) is unfortunate because your original task isn’t a task at all — it’s more like an outline header. Complicating matters, Microsoft Project allows you to edit the data (or cells) in a summary task. You can assign a start date and a resource to it. You can assign predecessors. Do this, and your summary task is technically no longer a summary of the indented information below it.

In other words, a summary task is frequently neither. But by calling it a “task”, Microsoft inadvertently promotes a bad scheduling practice. Worse, changing the “task’s” data interferes with the correct calculation of the critical path. It’s like pouring sugar into the gas tank of a car. Not advisable for the operation of the engine. Our project schedule analyzer checks to make sure that summary tasks haven’t been used improperly, helping the critical path “engine” do its job.

Oracle Primavera, on the other hand, takes a top-down approach. Early in the creation of a schedule, you create a WBS (work breakdown structure). This is a more sensible way to build your schedule. You start with the highest level items (for example, deliverables) and then keep breaking them down until you’re ready to start creating activities. The WBS items and the activities are seen as two completely separate entities in Primavera.

I will point out that it is possible to create a schedule in Microsoft Project using a top-down approach. This is what we recommend. Change your mental model of summary tasks — they are not tasks in any way, shape, or form, and they should be left alone to report (summarize) the tasks that belong to them.

A Must Have Software Utility

I’m kind of obsessed with productivity tools, and they generally fall into one of two categories: the ones everyone should use and the rest.

It’s our company mission to make must-have tools (viewers, analyzersexporters) for people who are writing, updating or reviewing project schedules.  We live in a niche; we design and deliver productivity software products for a specific group of people.

Some tools have a much broader range.  One tool that everyone should use is a text snippet insertion utility.  I use TextExpander, and while I don’t know if it’s the best or the worse, I know that I love what it does and how it does it.  It works well for me.

The purpose of these tools is pretty simple:  you type abbreviations or shorthand, like “fyi”, and the tool will insert a longer set of words, like “for your information”.  I set up “b@s” to be my email address — using the first letter of each side of the @ sign.  I have dozens of abbreviations now, and for me, it’s like typing in fast motion. Filling out forms is almost fun.


Occasionally, it expands when I don’t want it to, which means I chose an abbreviation that occurs “naturally in the wild,” so to speak.  Good abbreviations require creativity and practicality.  I tend to use the same three letters in a row like three s’s for Steelray.  (You can bet I didn’t type out the entire “Steelray” just then)

You know you love a tool when you miss it the minute you start using a computer without it installed.  The tool can be habit-forming, but in this case, it’s a good habit.  A tiny little superpower.

There are others in my “must-have” category, and most of them are like TextExpander, in that they do a very specific thing in a very useful way.  If you’re not using one, I recommend you take a week and give it a try.  It takes a little practice, but it’s worth it.