After you have set up a path with the desired modules you want to use the toggle in the UI to enable MicroPaths (see below).
Once it's been clicked, you will see a prompt to confirm.
IMPORTANT: Once this has been enabled on a path it cannot be turned off.
The number of modules in the path will determine how many micro paths are created. For example, if there are 10 modules, there may be 5 micro paths with 2 modules each.
Once the micro paths have been created, you can modify the modules in the first micro path:
After selecting the first micro path (red circle in the above image), you can modify the path by dragging and dropping modules below the micro path selection. You can include micro path names and descriptions. Once all your configurations are complete, be sure to "SAVE MICRO PATH." This can be repeated as needed for all the micro paths in your journey.