Training Session Types defines which topics (tasks) can be "learned" in a specific training activity. You can access the Training Session Types through this button:
This is a general topic of training. For example, if you create a Training Session Type “Emergency”, that would include Fire and Smoke training, Wet Drill training, etc.
For each kind of training activity in the system, you’ll need to create a Session. In order for it to be activated, the reference activity linked must include a name and must be of "Training" type.