The leader of the group, which refers to a person, but only to the target groups to suggest destinations, it is considered as the leader of this group, including leader issued a freaky.
The leader represents the party which led to the goal. Even just guiding you to your destination, it is a group leader, including the leader of the group led astray by.
The leader means a person which lead the group towards a goal. Even just guided the group is lead to destinations including leaders who led the freak out.