Hey Jamar,
It depend on what you set your group/events privacy.
Situation A
If you create group A and set this `Group Type` to `Invite Only Group`, when the user create event inside this group A, this event will auto set to private.
Situation B
If you create event without group, you can set this event type to `Invite Only event`, so everyone can't view this event unless inside event member invite their friend join this event.
Hope this will help.