Expand and Contract Flows

I would like the ability to be able to expand and contract the sub steps in a Step (or sub step) in the flow of events like an explorer view, so that I can either see the major steps or expand them to show detail.

e.g.

• 1. Major flow point

• 1.1 Sub flow Point

• 1.1.1 Sub sub flow Point

• 1. Major flow point 2

• 2.1 Sub flow point 2

so i can see it like this if I want to

• 1. Major flow point 1
• 1. Major flow point 2

etc.,

I am sure you get the idea. I am a new user so if you can do this already please let me know how.