Run or run all

Being new to simulation, I have a few questions. I noticed a reference to run all. For example; I go through all the steps and set up everything for 2 or 3 studies, hit the run all button, will it run them in order of creation? Or will it run them in some predefined order? Are there any serious drawbacks to doing that way? I would like to have the studies run starting at the time I have to leave.

SolidworksSimulation