[Craig]

I find myself using action groups mostly when I need to invert the parallel/sequential setting of the broader project.

- in a parallel project, there may be a chunk that needs to be sequential (e.g. gathering all the necessary materials for a meeting, and one of them requires looking up a phone number, calling a request in, waiting for the response, and receiving the item.)

- in a sequential project, there may be a chunk that needs to be parallel (e.g. in building a website, we need approvals of the design from three different people before continuing, and there is no way of knowing in advance in what order those approvals will be received)

I find that it's this switching gears of the sequence logic that call for action groups for me, more often than just conceptual chunking of my planning.