Study
A Generative Design Study is a Study for one geometry with the associated boundary conditions.
If small changes on the geometry are done, a new part can be created inside the model tree with the new solid and new created boundary conditions. For this changed geometry a second Study can be created.
Scenario
For one Generative Design Study several Design Scenarios can be created. In each Scenario the optimization parameters like Strut Density, Shape Quality, Stress goal, Complexity or even Advanced User Settings can be changed and variated. Moreover different Events for each Scenario can be selected.
Event
One Event is one load case for the Generative Design Scenario. For each scenario multiple Events can be created. For each Event different Loads and Constraints can be assigned. All Events will be considered for the optimization. How multiple Events influence the stress is described here.