To help in a Direct manner, you take responsibility as the primary helper and/or speak with the person directly.
To help in an Indirect manner, you seek assistance from someone else. This person becomes the primary helper. Some examples are calling Police, Public Safety, or EMS. You might also talk to someone (i.e. teacher, administrator, coach) to give guidance.
You always want to make sure a situation is safe before you get involved. If so, you can help in a direct way. If not, it’s time to call in assistance.